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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A population contains short plants and tall plants. The short plants are not able to compete with tall plants for sunlight. The tall plants, however, are more susceptible to wind damage. Which type of selection will this population of plants most likely experience? directional selection disruptive selection species selection stabilizing selection
Answer: D
Explanation: A population contains short plants and tall plants. The short plants are not able to compete with tall plants for sunlight. The tall plants, however, are more susceptible to wind damage.
Which type of selection are the plants experiencing?
directional selection
disruptive selection
If tall and small plants coexist in a population. Short plants are unable to compete for sunlight with tall plants. However, tall plants are more vulnerable to wind damage, it experiences stabilizing selection, hence option D is correct.
What is stabilizing selection?A form of natural selection when genetic diversity declines as a population stabilizes on a given trait value.
Disruptive selection's opposite is stabilizing selection. It favors the intermediate variants rather than people with extreme traits.
The more severe phenotypes are typically eliminated through stabilizing selection, which leads to the reproductive success of the average or typical phenotypes.
Therefore, stabilizing selection this population of plants most likely experience.
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What is a similarity between a tulip and a crocodile? A function of both of their outer coverings is to reduce water loss. In both the tulip and crocodile the male reproductive organ is the testes. The tulip and crocodile both have internal skeletons that support them. The outer coverings of the tulip and crocodile both protect the organism.
Answer:
A function of both of their outer coverings is to reduce water loss
Explanation:
Crocodile and Tulips are both distinct species of organisms. Crocodile belongs to Kingdom Animalia while Tulips belong to Kingdom Plantae. However, despite their elaborate differences, they do have one feature in common, which is the function their outer covering performs.
Tulips are temperate plants I.e. like cold regions, hence, their outer covering functions to prevent excessive loss of water. On the other hand, the scaly skin of the crocodiles help them against water loss. This is common between the two different species.
Where does respiration take place in the cell?
Answer:
The mitochondria is the location in the cell where most of cellular respiration takes place, although a small amount of cellular respiration does take place in the cytoplasm. The mitochondria is often called the power house of the cell because it is involved with making energy for the cell.
Answer:
aerobic respiration happens in the mitochondria.
PLEASE HELP I NEED IT TO BE RIGHT Which of these describes a method in studying plate movements? Select one: a. Observing absence of magnetic rocks in locations that do not match the poles Incorrect b. Match relief elements only on the western side of the Atlantic Ocean c. Recording the spread of the seafloor in the mid-Atlantic region d. Correlate the rotation of Earth to plate movement
Answer:
C. Recording the spread of the seafloor in the mid-Atlantic region
Explanation:
This seems to be the only logical answer. Since we are talking about a method in studying plate tectonics/movements, using evidence of it, seafloor spreading, would be the best idea out of the four.
Seafloor spreading is a geologic process in which tectonic plates—large slabs of Earth's lithosphere—split apart from each other.
Hope this helped! :-)
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
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:
Describe some of the basic trends in hominid evolution (brain size, jaw size, language, and manufacture of tools) using at least five (5) sentences.
Answer:
Hominids refers to humans and its closest relatives such as the chimpanzee, gorilla etc.
The basic trends in hominid evolution include:
1. The use of the rear limbs or legs for walking instead of four.
2. There was also an increase in the abuse and discoveries of the terrestrial habitat.
3. Their brain was known to increase in size which made them more sophisticated in thinking and knowledge.
4. They started making tools and used it to hunt wild animals for food.
5. There was a change in their diet as it went from fruits, leaves and other staple foods to the inclusion of a large amount of meat as a source of protein.
How would you explain to an athlete why damaged joint ligaments and cartilages are so slow to heal following an injury?
Answer: They have little to no direct blood supply.
Explanation: “Ligaments and cartilage injuries are very common injuries for people who practice sports. Damaged joint ligaments and cartilage are slow to heal because these structures don't have a significant blood supply, which brings necessary fluid and nutrients to the injured place. These nutrients and fluids are essential for damage repairing. If ligaments and cartilage become injured, their limited blood and nerve supply result in a longer recovery and healing period.”
The reason why damaged joint ligaments and cartilages are so slow to heal
is as a result of little blood flow within them.
Cartilages and ligaments are connective tissues which help to connect
bones and other parts together. This part of the body has very little blood
flow and a result blood carrying nutrients aren't adequately supplied to the
region.
Different nutrients and compounds which promote healing and repair of
worn out tissues are found in the blood and failure to reach these regions is
why healing is slow.
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Which of the following products were created through marine biotechnology?
Penicillin
Plasma television
Fluorescent dyes
Lithium batteries
Answer:
penicillin is the answer
NEED HELP ASAP
In vitro experiments model the conditions in living cells. Which of the
following is not an advantage of in vitro experiments ?
O A. The lack of interference from cell parts during observations
O B. The reduction in extra substances that can confuse results
O c. The unnatural behavior of some enzymes in a test tube
O D. The ability to control all possible variables
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.
In a new trial to test the effectiveness for a new type of medicine, why is it necessary for one group to receive a placebo?
Answer:
To serve as control experiment.
Explanation:
Hope it helps.
All wetlands are considered freshwater ecosystem
Answer:
Marshes, swamps, and bogs are all considered wetlands. ... Wetlands are not considered freshwater ecosystems as there are some, such as salt marshes, that have high salt concentrations—these support different species of animals, such as shrimp, shellfish, and various grasses.
Explanation:
i hope this helps you!
Answer:
It will be false
Explanation:
Took on edg
Mechanisms of gene regulation
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 statement describe a pattern shown in the data?
The data from trial 3 are inconsistent with the dat as from trials 1 and 2
how did the modern atomic theory develop?
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
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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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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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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Please help me, and only provide with the given answers so I am not confused. The curve on the left shows the height of a population of penguins. The curve on the right shows the population five years later. What has happened to this population? (Available answers are in photo) Will mark best answer BRAINLIEST
Explanation:
DIRECTIONAL SELECTION!!!!!!!!!!!!!!!!!!
The population of penguins has gone through the directional selection.
What is directional selection?It is a mode of negative natural selection in which an extreme phenotype is favored over other phenotypes.
This causes the allele frequency to shift over time in the direction of that extreme advantageous phenotype.
How these two graphs shows directional selection?On each graph, the X-axis variable is the type of phenotypic trait (here height) and on the y- axis variable is the number of penguins.
Left graph shows the population before directional selection and right graph shows the population after directional selection.
Here height of the penguins reduces and favored over time due to directional selection.
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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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*PLEASE ANSWER* What is a sudden increase in temperature of a natural body of water that can harm aquatic organisms? a.) land pollution b.) thermal pollution c.) air pollution d.) acid rain
Answer:
The answer is option B.
Thermal pollution
Hope this helps you
blood vessels that contain valves and rely on skeletal muscles to move blood are called:
A) arterioles
B) veins
C) capillaries
D) arteries
and why!? thanks!!
Answer:
veins because they carry low pressured blood due to which there is more chance for backward flow of blood and to prevent that they contain valves.
hope it helped uh..
Answer:
B. Veins
Explanation:
Veins carry blood relying on the action of the skeletal muscle as the body moves. Veins have valves so blood flows in only one direction. Valves are not present in arteries. Arterioles is small and contains valves to prevent backflow of blood but does not rely on skeletal muscles. Capillaries don’t have any valves. The correct answer would be veins.
During replication, which enzyme works to join newly created DNA strands together along various sites of the DNA macromolecule? RNA ligase DNA polymerase DNA ligase RNA polymerase
Answer:
DNA ligase
Explanation:
please tell me if I'm wrong
What is the oxidation hall reaction for 2Mg+O 2 2MgO ?
Answer:
2Mg(s) → 2Mg2+ + 4e. On the other hand, O2 was reduced: its oxidation state goes from 0 to -2. Thus, a reduction half reaction can be written for the O2 as it gains 4 electrons: O2(g) + 4e− → 2O.
Explanation:
Plants absorb sunlight through Photosynthesis. Which characteristic of life is this an
example of?
A. Obtains and uses energy
B. Responds to stimuli
C. Grows and develops
D. Homeostasis
Answer:
A. Obtains and uses energy
The characteristic of life shown here is plants obtain and use energy.
What is photosynthesis?By using the energy from sunlight, plants, some bacteria, and some protozoa make sugar, which cellular respiration then transforms into ATP, the "fuel" that all living things use. The green pigment chlorophyll is responsible for the transformation of inefficient solar energy into useful chemical energy. The photosynthetic process makes use of water and emits the oxygen that is vitally necessary for our continued existence.The overall reaction of photosynthesis is:6H₂O + 6CO₂ + light energy → C₆H₁₂O₆+ 6O₂
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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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