Answer:
They can use radioactive dating
Explanation:
To establish the age of a rock or a fossil, researchers use some type of clock to determine the date it was formed. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events.
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What is the scientific process? A. A group of logic science questions B. A way to avoid difficult problems C. A series of random science discoveries D. A formal method used to answer scientific questions
Answer:
A formal method used to answer scientific questions
Explanation:
design an experiment to test substances X, Y, and Z to determine which one is a catalyst for the reaction.
Answer:
A+B C. Only one of the unknown substances is a catalyst, and the others are nonreactive with A, B, or C. When 10 mL of A is added to 10 mL of B the reaction takes twenty seconds. Bubbles form when the product C is created. The student prepares three test tubes, each containing both reactants A and B. She adds unknowns X, Y, and Z to test tubes 1, 2, and 3, respectively.
Answer:
Prepare three test tubes containing reactant A
Prepare three test tubes containing reactant B
Add one test tube of reactant B and one unknown to one test tube of reactant A. Repeat for other two unknowns
Time the reaction until the bubbling stops
The unknown that causes the reaction to occur the quickest is the catalyst
Explanation:
Did the test
Three students test the effect of fertilizer on bean plant
growth. Each student conducts one trial. They plant 10
bean seeds in each of three large pots of soil with different
amounts of fertilizer. After two weeks, they measure the
heights of the plants in each pot. Then they find the
average height for each amount of fertilizer. The table
summarizes the results of the experiment.
Effect of Fertilizer on Height of Bean Plants
Amount of fertilizer Average height after 2 weeks (cm)
Trial 1
Trial 2
Trial 3
None
18.9
21.5
40.2
A little
19.5
32.7
39.7
A lot
34.3
33.2
16.5
Which statement describes a pattern shown in the data?
Answer:
i think it b if it not i can look in too it more if you need
Explanation:
The the trend in the data for trial 3 shows that plants grow taller if given more fertilizer, the correct option is b.
What is fertilizer?A fertilizer, also known as a fertilizer, is any natural or synthetic material that is applied to soil or plant tissues to supply plant nutrients.
Fertilizers can be distinguished from liming materials or other non-nutritional soil amendments. There are numerous fertilizer sources, both natural and man-made.
Fertilizers are plant food. Fertilizers replenish the essential minerals lost by crops in the soil. Crop yields and agricultural productivity would be significantly reduced if fertilizers were not used.
It provides nutrients to the plants throughout the growing season. The base fertilizer, along with presowing fertilization and top dressing, forms the fertilizer system used in crop rotation.
The data from Trial 3 show that plants grow taller when given more fertilizer.
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homeo- comes from a greek word means still the suffix stasis comes from "stoppage" or "standstill" how does this relate to homeostasis
Answer:
The greek word homeo- relates back to homeostasis, as homeostasis is the body keeping it from doing something extreme. Homeostasis tries to maintain your body instead of letting systems wander all over the place, so it is "stopping" it from doing anything irrational.
Explanation:
Activity Many farmers and gardeners compost their plant and animal waste. The living material naturally decays in compost bins, forming a dirt-like substance that’s rich in nutrients. The next season, farmers use this substance as a natural fertilizer for their crops. A biology student has grown tomato plants for several years. Until now, he used an artificial fertilizer formulated for tomato plants. This fertilizer caused his plants to grow faster and taller than they grew in unfertilized soil. The student wants to know whether using natural compost will cause his tomato plants to grow faster and taller than his artificial fertilizer. Answer the following questions to plan an investigation using the steps of the scientific method and help the student find the answer to his question. Part A What are the student’s observations and inferences before he starts his investigation?
Answer:
OFFICIAL ANSWER (do not copy verbatim):
The student has observed that artificial fertilizer makes his plants grow faster and taller than plain soil. He knows that compost is a natural fertilizer. So, he infers that compost will make his plants grow at a faster rate than they grow in plain soil.
Explanation:
Which is one reason why hydrogen is considered a better fuel source for cars? It is nonrenewable. It produces carbon dioxide. It emits no harmful emissions. It combines with water to produce electricity.
Answer:
I’m pretty sure it’s .D
Explanation:
Hydrogen is considered a better fuel it emits no harmful emissions.
Hydrogen:Hydrogen is consider as clean fuel, when it is consumed with fuel cell produces only water. It is produced from variety of domestic sources such as natural source and renewable source such as solar and wind.
Hydrogen fuel can be used in:
Renewable liquid fuelsgasified biomassgasified coalDieselOnce hydrogen gas is generated it produces electrical power in a fuel cell, emitting water vapor and air. Hydrogen's energy content by volume is low.
Hydrogen storage is a challenge because it requires high pressures, low temperatures, or chemical processes to be stored compactly. Hydrogen fuel should now be feasible and easily available so that people can easily buy it.
Therefore, Hydrogen is considered a better fuel it emits no harmful emissions.
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Scientific explanations are the result of scientific reasoning. Whenever scientific reasoning is used,
takes place.
Answer:
The options are
A.) an active consideration of alternative explanations.
B.) a process to totally disprove alternative explanations.
C.) a process to prove a given explanation with logic.
D.) the collection of completely accurate observations.
The answer is D.) the collection of completely accurate observations.
Scientific reasoning results in a thoughtful process and consideration of several informations. This results in Scientific explanation as to the occurrence of such an event.
It is therefore imperative that whenever scientific reasoning is used there is the collection of completely accurate observations.
Match the type of rock with how it forms.
Sedimentary
?
Forms due to cooling
Igneous
?
Can form from decaying
animals
Metamorphic
?
Can only form
underground
Mainly three types of rocks are there namely igneous, sedimentary and metamorphic. Sedimentary rocks are formed by decaying animals, igneous by cooling and metamorphic from underground.
What are types of rocks?Rocks are the aggregates of minerals which have properties of all mineral traces. Each major rock can have different classification systems.
The major rocks can be of three types.
Igneous rocks: these are formed by cooling of magma or lava.Sedimentary rocks: these rocks are formed by dead and decaying animals.Metamorphic rocks: these are formed deep inside the Earth.Thus, the match will be like (i)b, (ii)a, (iii)c.
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You are on vacation with your family up in the mountains. Your friend is on vacation near the equator by the ocean. Explain which climate will experience the most precipitation based on what you know. Both climates will have the same amount of precipitation. The ocean climate will have less precipitation because it is close to sea level. The climate around the equator will have more precipitation because it is very hot. The mountain climate will have more precipitation because it increases with elevation.
Answer:
Mountan
Explanation:
why is the dominant allele called dominant.
A. There is always at least one dominant allele
b. there are always more dominant alleles in a genotype
c. it dominates the phenotype
d. the dominant alleles are the only kind that determine phenotype.
Answer:
It dominates the phenotype
Explanation:
Why can the more complex sugar cellulose store more energy than the sugar
glucose?
A. Cellulose is made by plants.
B. Cellulose is smaller than glucose.
C. Cellulose has more chemical bonds.
D. Cellulose contains hydrogen atoms.
Answer:
Cellulose has more chemical bonds
Explanation:
It is complex carbohydrates molecule and stores thosands of energy as in glucose
The statement (C) is correct. The cellulose has more chemical bonds.
What do you mean by cellulose?Cellulose is an organic compound with the formula ₙ, a polysaccharide consisting of a linear chain of several hundred to many thousands of β linked D-glucose units. Cellulose is an important structural component of the primary cell wall of green plants, many forms of algae and the oomycetes.
Moreover, cellulose, a tough, fibrous, and water-insoluble polysaccharide, plays an integral role in keeping the structure of plant cell walls stable. Cellulose chains are arranged in microfibrils or bundles of polysaccharide that are arranged in fibrils (bundles of microfibrils), which in turn make up the plant cell wall.
Hence, cellulose is an insoluble dietary fibre consisting of glucose polymers present in all cell walls of plants.
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Carefully study the diagram below and answer the questions that follow. a. Label the structures A to F b. Name two structures that are concerned with temperature regulation in Man. c. State two functions of D d. State two functions of G. e. Where in Man is structure G thickest? f. What labelled part is involved in excretion by the skin?
Answer:
a. A - Free Nerve ending
B- Hair erector muscle
C- Capillary
D- Sebaceous Gland
E- Sweat Gand
F- Epidermis
b. Two structures that are concerned with temperature regulation in Man are sweat glands and blood vessels. Sweat glands of the dermis, secrets sweat which then evaporate on the skin surface and maintain body temperature. constricted blood vessels retain the heat while dilated vessels allows heat loss.
c. Sebaceous gland is an exocrine gland that secret sebum having following functions:
protect skin from bacteria and microorganisms.reduces water loss from skin surface.d. G refers to stratum corneum, its functions are:
Forms a barrier to protect underlying tissues from damage.It contains keratin protein which keeps the skin hydrated.e. Stratum corneum is thickest in palms and soles in man.
f. Sweat glands are involved in the excretion by skin as they secret a fluid waste sweat and release it at skin surface.
question:
Carefully study the diagram below and answer the questions that follow. a. Label the structures A to F b. Name two structures that are concerned with temperature regulation in Man. c. State two functions of D d. State two functions of G. e. Where in Man is structure G thickest? f. What labelled part is involved in excretion by the skin?
Answer:
a. A - Free Nerve ending
B- Hair erector muscle
C- Capillary
D- Sebaceous Gland
E- Sweat Gand
F- Epidermis
b. Two structures that are concerned with temperature regulation in Man are sweat glands and blood vessels. Sweat glands of the dermis, secrets sweat which then evaporate on the skin surface and maintain body temperature. constricted blood vessels retain the heat while dilated vessels allows heat loss.
c. Sebaceous gland is an exocrine gland that secret sebum having following functions:
protect skin from bacteria and microorganisms.
reduces water loss from skin surface.
d. G refers to stratum corneum, its functions are:
Forms a barrier to protect underlying tissues from damage.
It contains keratin protein which keeps the skin hydrated.
e. Stratum corneum is thickest in palms and soles in man.
f. Sweat glands are involved in the excretion by skin as they secret a fluid waste sweat and release it at skin surface.
What are DNA machines, according to Kraves?
Answer:
they are machines or devices build to find la DNA trace and copy it multiple times.
Explanation:
DNA machines are machines built to find a DNA line and copy it multiple times, so scientists can read, observe, and find information about the DNA strand. For example, DNA machines can determine if someone is related, if someone has cancer, and it can distinguish a person’s ancestry. Mainly this is how forensic science uses to determine when there's a suspect in a crime.
Answer:
Machines that can find any specific line of genetic information. They then copy the target gene until we are able to visualize it
Explanation: I watched the actual video
Cilia in the sinuses sweep away: air. carbon dioxide. irritants. water.
Answer:
air and carbon dioxide
Explanation:
Answer:
c
Explanation:
The atmosphere is necessary for life on earth. Which one of the
following is not one of the life-supporting functions of the
atmosphere?
Select one:
a. Stores aerosol pollutants in the troposphere.
b. Contains gases necessary for cellular respiration.
c. Protects living organisms from harmful solar radiation.
d. Absorbs the sun's energy.
e. Plays an important part in the water cycle and many
nutrient cycles.
Answer:
A.
Explanation:
It is true that aerosol pollutants are present in the atmosphere, but they are usually harmful for life, so it doesn't support life functions. The other choices do help support life functions, so A is your answer.
When an animal consumes
food what percent of the
food's energy is used for
growth?
A. 5%
B.30%
C.40%
D. 10%
Answer: The Answer Is D
Explanation: Because each of the Trophic levels pass on 10% of their energy to the Trophic level that ate it, if that can make sense.
Answer:
D. 10%
Explanation:
According to the 10% rule, ten percent of energy is passed from one energy level to the next.
Daniel’s doctor is trying to determine the cause of his recent onset of asthma symptoms. Of the information Daniel provided, which would his doctor find most helpful in determining a cause?
a.
Daniel had never experienced asthma symptoms until now.
b.
Daniel notices the asthma symptoms occurs more often during cross country practice.
c.
Daniel’s worst symptom is shortness of breath.
d.
Daniel’s sister was diagnosed with asthma at an early age.
Daniel worst symptom is shortness of breath.
That is also one of the emerging cause in asthma patients
Shortness of breath is the worst symptom which can help doctor determine his onset of asthma symptoms. Therefore, option (C) is correct answer.
What is asthma?A illness that affects your lungs is referred to as asthma. Although it is more prevalent in children than in adults, asthma is a chronic condition that can affect people of any age. In people who suffer from asthma, nighttime and early morning coughing, wheezing, shortness of breath, and chest tightness are common symptoms.
Even though there is no cure for asthma at this time, medication can help control the symptoms so that you can lead a normal, active life. The most common form of treatment involves the use of inhalers, which are handheld medical devices that deliver medication via inhalation. If your asthma is severe, you may also need to take tablets and participate in other therapies.
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What are the applications of Bioanalytical Service?
Explanation:
hope its wht u r searching for
What happened to the catalase molecule when exposed to high heat and acid?
it grew larger
it disappeared
it dissolved
it changed shape
Answer:
2. it disappeared because the heated up acid ate it away
The plasma membrane is composed of a phospholipid bilayer with embedded proteins. What is one of the functions of the embedded proteins?
A.
preventing the phospholipid tails from binding together
B.
allowing specific substances to flow into the cell
C.
protecting the cell from physical harm
D.
defining the cell's structure and shape
Answer:
answer is b
it allows specific substances to cross through it
Which is the immediate effect of being infected by last season's flu virus? A. get the last season's flu virus B. receive this season's flu vaccine C. Immune to last season's flu virus D. Produce antibodies that attach to this season's flu virus.
Answer:
probley
Explanation:
A. get the last season's flu virus
or
C. Immune to last season's flu virus
Which of these elements is a noble gas? A. hydrogen (H) B. barium (Ba) C. nitrogen (N) D. krypton (Kr) E. bromine (B
Answer:
the answer is krypton
What is a difference between prokaryotic and eukaryotic cells? A. Eukaryotic cells do not have membrane-bound organelles, but prokaryotic cells do. B. Prokaryotic cells always have cell walls, but eukaryotic cells do not. C. Prokaryotic cells do not have a nucleus, but eukaryotic cells do. D. Organisms with eukaryotic cells are always multicellular, but organisms with prokaryotic cells are not.
Answer:
Your right option is C
Explanation:
Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus (meaning its DNA is surrounded by a membrane), and has other membrane-bound organelles that allow for compartmentalization of functions.
Answer:
C. Prokaryotic cells do not have a nucleus, but eukaryotic cells do.
hopefully this helped :3
Which of the following is a false statement about sensation?
A) When sensory information is detected by a sensory receptor,
sensation has occurred.
b) Sensation refers to the way sensory information is organized,
interpreted, and consciously experienced.
c) There are differences in sensation between species.
d)
We have more than five senses.
Answer:
Tha answer is D.This is because all senses depend on sensory receptor cells to detect sensory stimuli and transform them into nerve impulses. Types of sensory receptors include mechanoreceptors (mechanical forces), thermoreceptors (temperature), nociceptors (pain), photoreceptors (light), and chemoreceptors (chemicals).
The statement i.e. false related to the sensation should be option d. It contains more than five senses.
What is sensation?In terms of neurology and psychology, sensation refers to the experience that resulted from the stimulation of the particular sense organ or the sense area in the brain. All types of senses should be based on the sensory receptor cells for detecting the stimuli of sensory and then converted into the nerve impulses.
Therefore, The statement i.e. false related to the sensation should be option d.
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Which of the following is a consequence of humans using fossils fuels?
Answer:
I think you forgot to put the options. But I hope this helps.
Explanation:
Burning fossil fuels emits a number of air pollutants that are harmful to both the environment and public health. Sulfur dioxide (SO2) emissions, primarily the result of burning coal, contribute to acid rain and the formation of harmful particulate matter.
Have a good day and stay safe!
Increased concentrations of atmospheric carbon dioxide is a consequence of humans using fossils fuels. The correct option is a.
What are fossil fuels?Fossil fuels are derived from the decomposition of plants and animals. These fuels, which can be encountered in the Earth's crust and encompass carbon and hydrogen, can be burned for energy.
Fossil fuels include coal, oil, and natural gas.
The missing options of the question are:
a. Increased concentrations of atmospheric carbon dioxideb. Destruction of wildlife habitatsc. Leaching of waste into groundwaterd. None of the aboveIncreased concentrations of atmospheric carbon dioxide is a consequence of humans using fossils fuels.
Thus, the correct option is a.
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PLEASE HELP ME!! ASAP Why is it so difficult to tell the impact of pollution in the deep ocean region?
Explanation:
THE OCEANS ARE so vast and deep that until fairly recently, it was widely assumed that no matter how much trash and chemicals humans dumped into them, the effects would be negligible.
hope it helped
All forms of pollution eventually taint water. Air pollution contaminates lakes and oceans. An underground stream, a river, and ultimately the ocean could all become contaminated due to land contamination.
What is the impact of pollution in the deep ocean region?The consequences of the toxins aren't usually obvious or simple to spot. Only in the cases of marine debris, man-made noise, and acidification by atmospheric CO2 can cause and effect be clearly shown.
The unfavorable climate makes it difficult to study the ocean floor. Instruments like sonar can be used to pollution study the seafloor in an indirect manner.
In contrast to mapping the land, the sea floor can't be directly measured from space using radar, since the water there absorbs the radio signals.
Therefore, With the aid of unique vehicles, it may be directly researched. To the ocean floor, certain vehicles transport scientists and their equipment.
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Which two statements describe organisms found in the kingdom Plantae?
O A. Their cells lack cell walls.
O B. They have prokaryotic cells.
O C. They are mostly autotrophic.
O D. They are multicellular.
SUBMIT
Answer:
C. They are mostly autotrophic.
D. They are multicellular.
Explanation:
I did this question on A P E X and it’s right hope this helps!!
Proof:
The statements that describe organisms found in the kingdom Plantae is that they are mostly autotrophic and they are multicellular. Thus, option C and D is correct.
What are Eukaryotes organisms?Eukaryotes organisms are organisms whose cells have a nucleus and membrane-bound organelles; whereas prokaryotic organisms are unicellular organisms that do not have membrane-bound structures and/or organelles. Eukaryotic organisms include animals (kingdom Animalia), plants (kingdom Plantae), fungi (kingdom Fungi), and protists (Kingdom Protista).
Multicellular organisms are organisms composed of two or more cells. Multicellular organisms include plants, animals and fungi. Photosynthetic organisms are organisms that make their own food from sunlight (e.g., plants).
Therefore, The statements that describe organisms found in the kingdom Plantae is that they are mostly autotrophic and they are multicellular. Thus, option C and D is correct.
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All animals, with the exception of sponges have which of the following characteristics?
heterotrophy, multi-cellularity, haploidy, tissue, blastula formation, mobility, sexual reproduction, no cell wall
heterotrophy, multi-cellularity, diploidy, tissue, blastula formation, mobility, sexual reproduction, cell wall
heterotrophy, multi-cellularity, diploidy, tissue, blastula formation, mobility, sexual reproduction, no cell wall
autotrophy, multi-cellularity, diploidy, tissue, blastula formation, mobility, sexual reproduction, no cell wall
Answer:
C
Explanation:
Animals do not have a cell wall so that eliminates B. They also cannot be an autotroph, the only organisms that can be autotrophy are algae and plants, so this eliminates D. I hope this helps:)
Animals, with the exception of sponges have heterotrophy, multi-cellularity, diploidy, tissue, blastula formation, mobility, sexual reproduction, no cell wall. Thus, option C is correct.
what are the characteristics of sponges?
Sponges are sessile most primitive filter-feeders, it has cell based organization. It draw water through their pores and filter cells to gather food.
The skeleton system of sponges arise from collagen with reinforcing spicules. It is made up of calcium or silicon compounds.
The body of sponges are either radially symmetrical or asymmetrical.
Sponges have no tissue system, cardiovascular, nervous systems, muscles or sense organs.
Some species of sponges produce sexually, some produce one type of gamete, while species produce both.
Sponges release sperm into the water which are captured by other sponges as the food.
Sponges also do asexual reproduction such as budding.
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please help write it descriptively 1. What's inside a black hole? 2. What happens if a person goes into a black hole? 3. What is black hole in simple words? 4. What are the 4 types of black holes? 5. Why is the black hole asymmetric?
Answer:
Answer to 1: a black hole is a tremendous amount of matter crammed into a very small (zero) amount of space. Answer to 2: the top of your head would feel so much more gravitational pull than the tips of your toes that you would be stretched, longer and longer Answer to 3: A black hole is a place in space where gravity pulls so much that even light can not get out.This can happen when a star is dying. The gravity is so strong because matter has been squeezed into a tiny space. because no light can get out, people can't see black holes Answer to 4: stellar, intermediate, supermassive, and miniature. Answer to 5: the asymmetry of bright and dark sections of the ring are caused by the Doppler effect as the matter is coming toward Earth (brighter) or receding (dimmer).
Explanation:
Please Help ! Look at the diagram. What type of cell is shown by number 5?
Answer:
it will be a neuron
Explanation:
it will be unipolar neuron.it has a branch also
i have a request plzz mark this answer as brainliest
Neuron is that cell which indicates by diagram number 5 because the shape is just like the cell of neuron.
Neurons are the fundamental units of the nervous system. These neuron cells are responsible for receiving sensory messages from the external environment and send to nervous system and brain. The brain and nervous system sending commands to the muscles through motor neurons. This neuron cell is different from other types of cell so we can say that the diagram 5 represents neuron cell.
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