Answer:
The correct answer is "sand, cornstarch".
Explanation:
Two basic criteria that must be included in any experiment is using a control and test one variable at a time. In this case, the behavior of pill bugs in cornstarch is going to be studied. The dish serving as control will have sand in both sides. And the dish serving as the experimental approach must have sand in one side and cornstarch in the other. By having this configuration this dish serves as the focus of the study, including the variable (cornstarch) and the control (sand).
**will give brainliest**
Which correctly lists the three elements that geologists measure to determine the age of an organism’s remains?
A. argon, nitrogen, and carbon-12
B. carbon-14, nitrogen, and carbon-12
C. nitrogen, potassium, and carbon-14
D. carbon-12, potassium, and argon
Answer:
It’s Carbon -12,potassium, and argon.
Explanation:
The three elements used by geologist to measure the age of organism’s are carbon-12, potassium, and argon. Thus, option D is correct.
Which method is used to determine of age of organism’s remains?The age of organism’s remains is determined by two methods of calculation such as carbon dating and by radioactive calculations as all living things are made up of carbon. It calculates the age by estimating at what time the fossil was alive.
Now a days, instead of the decay of carbon-14 and nitrogen-14, radioactive isotopes are used for determining the age of organism’s remains, known as Radiocarbon dating.
The radioactive isotopes of different elements present in our environment. The older elements are uranium, argon etc are used to measure age of a fossil.
The use of older naturally available radioactive elements is more successful in determination of age of organism’s remains. Hence, option D is correct.
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What is a phase change that occurs when a gas transition into a liquid?
Answer: Condensation
Explanation:
Hope this helps :)
Answer:
Condensation
Explanation:
That's the definition.
Condensation is the conversion of a gas to a liquid.
A. is wrong. Melting is the conversion of a solid to a liquid.
B. is wrong. Sublimation is the conversion of a solid to a gas.
D. is wrong. Evaporation is the conversion of a liquid to a gas.
The picture below shows the condensation of water vapour on window glass on a cold winter day.
B. Hypothesize how small changes in energy use can make a significant difference in CO,
emissions.
Answer:
small changes of energy can create such a big difference in co emissions. As we use less energy the amount of harmful gases that are produced from them will lower, therefore creating a smaller amount of greenhouse gases/ CO into the atmosphere.
Which change would most likely cause a decrease in the number of squirrels living in and area
Answer:
Migration of squirrels.
Explanation:
Migration of squirrels can cause decrease in population in an area.
Squirrels migrate or move for one place to another which can be as a result of drought, food shortage or overpopulation.
Squirrels tend to migrate from an area to another in search of food for living. They also move when there is drought to get water and when their population in an area much, the migrate to get another space.
Answer:
an increase in the number of forest fi res
Explanation:
I did this before
Which two processes happen during mitosis? A. The nucleus divides only once B the chromosomes move in a pattern C the gametes fuse to form a zygote D the nucleus goes through two rounds of division (Choose two pls)
Answer:
A and B, I think.
Which Gram (+) positive bacteria are positive for the Coagulase test?
Answer:
Coagulase test is used to differentiate Staphylococcus aureus (positive) from Coagulase Negative Staphylococcus (CONS).
Explanation:
Coagulase is an enzyme produced by S. aureus that converts (soluble) fibrinogen in plasma to (insoluble) fibrin. Staphylococcus aureus produces two forms of coagulase, bound and free. hope this helps you :)
What two products from the light-dependent stage of photosynthesis are used in the light-independent stage? water and oxygen ATP and NADPH sunlight and glucose ADP and NADP+
Answer:
ATP and NADPH
Explanation:
You make ATP and NADPH in first part of photosynthesis which are then later used to convert CO2 into glucose through series of reactions.
Answer:
ATP and NADPH
Explanation:
Biodiversity is the variety of life in an area. Think about the
process of succession. How does biodiversity change during
succession?
Biodiversity increases through the process of succession.
Biodiversity decreases through the process of succession.
Biodiversity does not change during the process of
succession.
Answer:
It Increases.
Explanation:
Biodiversity is the the variety of living organisms such as wildlife and plants. The number of organisms and biomass amount further increases in the ecosystem in which the process of succession is occurring.
The numbers will stabilize when a climax stage has occurred in succession, which will not change the biodiversity.
The sort of many lives living together in an ecosystem or habitat is called biodiversity. Biodiversity increases during the process of succession.
What is succession?Succession is the biological and chemical process of change and formation of the habitat and species of a particular place during a period. It can be primary or secondary.
The formation of the new habitat in barren land is primary succession while the formation of the ecosystem in a once habituated place is secondary succession.
Biodiversity always increases in the succession process till the climax community is not achieved till the conditions are well balanced.
Therefore, option A. biodiversity increase in the process of succession.
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how are the lysogenic and lytic cycle similar ?
Based on the food chain, if a hawk acquires 50 calories of energy, how much energy did the grasshopper get from the plant?
Answer:
50,000 calories
Explanation:
2. A real estate agent showed Mela pictures of a particular lakeshore property while they were
eating a delicious, mouth-watering meal. Later, when Mela is in the real estate office trying to
decide which property to purchase, she finds herself drooling when she sees the pictures of that
particular lakeshore property.
I
Neutral Stimulus:
Unconditioned Stimulus:
Unconditioned Response:
Conditioned Stimulus:
Conditioned Response:
Answer:
Neutral Stimulus: Particular Lakeshore property.
Unconditioned Stimulus: Mouthwatering meal.
Unconditioned Response: Drooling.
Conditioned Stimulus: Particular lakeshore property.
Conditioned Response: Drooling.
Explanation:
A neutral stimulus is a stimulus that leads to no specific response other than drawing attention. Unconditioned Stimulus cause automatically a particular response without external stimulus. An unconditioned response is a response or reaction to the unconditioned stimulus. A conditioned stimulus is a changed stimulus that activated the same response in an organism as an unconditioned stimulus.
Neutral Stimulus: Particular Lakeshore property.
Unconditioned Stimulus: Mouthwatering meal.
Unconditioned Response: Drooling.
Conditioned Stimulus: Particular lakeshore property.
Conditioned Response: Drooling.
Think of the shape of a wave. It looks like a squiggly line. We know the highest part of that line is the peak. The wavelength is the distance between wave peaks. Waves of the same type can differ in wavelength. For example, the wavelength of light waves determines its color. Amplitude is the measurement of a wave's height. It is measured in two ways. Peak-to-peak amplitude is the distance between the peak (the topmost part of a wave) and the trough (the lowermost part). Semi-amplitude is half the peak-to-peak amplitude. Most of the time when people refer to "amplitude," they are referring to the semi-amplitude: the distance from the middle of the wave to the top, or the middle of the wave to the bottom. The amplitude of a sound wave determines its volume.
Which of the following best explains the relationship between peak-to-peak amplitude and semi-amplitude?
A Semi-amplitude is half the distance of the peak-to-peak amplitude.
B Semi-amplitude is the same distance as the peak-to-peak amplitude.
C Semi-amplitude is double the distance of the peak-to-peak amplitude.
D Semi-amplitude is always greater than the peak-to-peak amplitude.
Answer:
A Semi-amplitude is half the distance of the peak-to-peak amplitude.
Answer:
A Semi-amplitude is half the distance of the peak-to-peak amplitude
Explanation:
Semi-amplitude is from the middle of the wave to the top or bottom
Solve for x: 3 − (2x − 5) < −4(x + 2)
Your answer:
x < −8
x > −8
x < −3
x > −3
Answer:
x < -8
Explanation:
3 − (2x − 5) < −4(x + 2)
3- 2x +5 < -4x - 8
-2x +8 < -4x -8
-2x < -4x -16
2x < -16
x < -8
Answer:
[tex]x < - 8[/tex]
First answer is correct
Explanation:
[tex]3 - (2x - 5) < - 4(x + 2) \\ 3 - 2x + 5 < - 4x - 8 \\ - 2x + 4x < - 3 - 5 - 8\\ 2x < - 10 \\ \frac{2x}{2} < \frac{ - 16}{2} \\ x < - 8[/tex]
hope this helps you
Some plants and animals are capable of asexual reproduction. Describe how this process occurs in one specific plant and one specific animal. Discuss the benefits and pitfalls of this reproduction strategy for each organism. Conclude with an explanation of how asexual reproduction can help and hinder a population’s ability to grow.
_______ behaviors rely on prior practice or experience.
Homologous structures are assumed to: • Have different functions •Have the same evolutionary origin •Have the same function •Have different evolutionary origins
Answer:
Have the same evolutionary origin
Explanation:
Predicting the evolutionary relationship between organisms require certain structures, which are used as evidence. These structures can either be homologous or analogous.
Homologous structures are those structures of organisms that have a similar embryonic or evolutionary origin i.e. share common ancestors. For example, the wings of a bat and the arm of humans are homologous structures because they are found to be from the same evolutionary origin. Although, they appear different and perform different functions but using genetical means (DNA), they have been found to share a common ancestor.
On the other hand, analogous structures are structures that perform similar functions and are physically similar but they evolved from different evolutionary origins.
Question 8 of 15
2 Points
The spatial arrangement of lone pairs and bonded pairs around the central
atom is called
A. electron-group geometry
O B. geometric design
C. electron-pair repulsion
D. electronegativity
Answer: Electronegativity
Explanation:
Answer: is A electron-group geometry
Explanation:
Fill in the blank. An object can be broken up by a planet's gravity once it passes the _______. The Jovian planets are composed primarily of _______ and helium. Hydrogen and helium don't exist in Earth's _______ because the terrestrial planets of Mercury, Venus, Earth, and Mars couldn't exert a strong gravitational pull on hydrogen and helium gas within the nebula. _______ is the planet closest to the sun, has almost no atmosphere, and what little atmosphere exists is constantly getting blown away by solar wind. The atmosphere of _______ is very hot and dense, comprised of approximately 95 percent carbon dioxide, and the surface is composed of molten bedrock. Respond to the following based on your reading. Briefly describe why an object might break up under the force of gravity as it approaches a planet. What happens if the planet is very dense? What if the planet is less dense? Briefly explain why the Jovian planets formed farther away from the sun than the terrestrial planets.
Answer:
1. Roche limit
2. hydrogen
3. atmosphere
4. Mercury
5. Venus
6. When an object passes the Roche limit, the strength of gravity on the object increases. If the density of the planet is higher, then the object can break up farther away from the planet. If the density is lower, then the Roche limit is located closer to the planet.
7. Farther out in the solar system, beyond the frost line, hydrogen was at a low enough temperature that it could condense. This allowed hydrogen to accumulate under gravity, eventually forming the Jovian planets.
Explanation:
The universal pull of attraction that is present on the planet is called gravity. The gravitational pull results in attraction force between planets, stars, galaxies etc.
The blanks are:
Blank 1: Roche limit
Planets have a limit to which they can entertain objects in their atmosphere. The limit at which the gravity of the planet breaks object is called the Roche limit.
Blank 2. Hydrogen
Jovian planets include Jupiter, Uranus, Saturn and Neptune and have rocky surfaces.Primary gases found on the Jovian planet are helium and hydrogen along with traces of ammonia, methane etc.Blank 3. Atmosphere
The atmosphere of the earth does not have helium and hydrogen in them as the gravitational pull by other planets like Mercury, Mars and Venus are not able to exert a pull on helium and hydrogen-containing atmospheres.
Blank 4. Mercury
The planet closest to the sun is mercury and it has no atmosphere and is the smallest planet.
Blank 5. Venus
The second closest planet to the sun and the hottest planet of the solar system is Venus it has a dense atmosphere with 95% carbon dioxide in its atmosphere.
6. The object passing the Roche limit goes through increased gravity which breaks the object.
If the planet is dense then the object breaks further from the planet while when the planet is less dense then the Roche limit will be located close to the planet.
7. The Jovian planets formed far away from the Sun because beyond point Hydrogen accumulated due to low temperature and formed the Jovian planets.
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VERY EASY QUESTION. WILL MARK BRAINLIEST
If the speed of a wave increases but the frequency remains the same, what must be true of its wavelength?
The wavelength will decrease.
The wavelength will fluctuate wildly.
The wavelength will increase.
The wavelength will stay the same.
Answer:
(A)
Explanation:
increase in frequency will reduce the wavelength of the wave to keep the velocity constant (v=nu x lambda) and vice versa
after meiosis_____ gentically different cells are formed
two
three
four
Answer:
The correct answer is four.
Explanation:
After meiosis four, genetically different cells are formed. The meiosis results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell.
I hope this helps you out :)
What is an Oxitec mosquito? What is its purpose?
Answer:
Oxitec developed a genetically modified version of the yellow fever mosquito to help control the transmission of mosquito-borne diseases.
Oxitec created genetically-altered males of the species that produce the protein called tTA, which negatively affects cell development.
Explanation:
Which of the following is the
function of the nuclear
membrane?
A. It contains genetic information.
B. It is the control center of the cell.
C. It allows material in and out of the nucleus.
D. It keeps the organelles from colliding.
Question 1
Directions
Not complete
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Flag
question
• On the STARS tab, check that Region A: NGC 224 (Andromeda
Galaxy) is selected. If not, click Return to map and select Region A.
Locate and select the white Cepheid variable star (A-171) in the
upper right section of the Andromeda Galaxy.
• Click the Collect data button. You will see a graph of the apparent
brightness of the star over time.
. Click Show time probes and match up the sliders with two
consecutive peaks. This will help you determine the Period by
subtracting the lowest time from the highest time.
What is the average period of star A-171? Choose the answer that
most closely matches your measured value.
Select one:
a. 6 days
b. 8 days
c. 2 days
d. 4 days
Answer:
there's no table
Explanation:
lol can't help without the table
Red-green color blindness is an X-linked recessive disorder.
A Punnett square is shown. The columns are labeled X Upper B and Upper Y. The rows are labeled x Upper B and x b.
What is the probability of having red-green color blindness for the cross that is represented by the Punnett square?
0 percent
25 percent
50 percent
75 percent
Answer:
50 percent
Explanation:
By creating a punnet square it would result in XXBB, XBY, XxBb, and xBY. Because red-green color blindness is recessive there must be two x. There are two out of the four combinations that have 2 x.
The probability of having red-green color blindness for the cross is 25 percent. The correct option is B.
What is Punnett square?The genotypes of a specific cross or breeding experiment are predicted using the Punnett square, a square diagram.
It bears Reginald C. Punnett's name, who developed the method in 1905. Biologists use the figure to calculate the likelihood that a child will have a specific genotype.
A 25% likelihood exists in the Punnett square that the progeny will be colorblind to red-green.
People who have red-green colour blindness have trouble telling apart hues like red, green, orange, and yellow. Although there is no effective treatment for colour blindness, people with the condition lead normal lives.
Thus, the correct option is B.
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Your question seems incomplete, the missing image is:
A Punnett square is used to _______.
➼ predict the genotypic and phenotypic probabilities of possible offspring
➼ determine if a trait runs in a family
➼track inherited traits through many generations
➼identify organisms that are carriers of a specific trait
❗PLEASE PROVIDE AN EXPLANATION, OR I WILL DELETE YOUR ANSWER/NO POINTS❗
Hello,
The answer is option A "predict the genotypic and phenotypic probabilities of possible offspring".
Reason:
A Punnett square is used to determine (predict) the genotype, and phenotype of a organism. Phenotype is the physical features of a organism fur, ears, nose, etc.... Genotype is most likely the height, eye color, etc....
If you need anymore help feel free to ask me!
Hope this helps!
-me :)
1. Lymph are found throughout the body and are a signal of a disease,
or problem if they become and remain swollen for long periods of time
2. are pathogens that cannot be killed with antibiotics because they ar
living. They take over cellular organelles to replicate and spread.
3. Because they are also eukaryotes ith their own cell membranes and men
bound organelles,
are ofte
ficult to combat with medicines,
4. A cell signal called is produced by mast cells. These molecules cau
fluid to spread to an infected area.
are the types of cells that produce antibodies.
6. All pathogens have unique identifying molecules on their surfaces called
Antibodies bind to these, and targeting the pathogen to be destroyed by th
system
5.
The question in incomplete and blanks are not clear in the question, so the complete question is as follows:
1. Lymph ______ are found throughout the body and are a signal of a disease, infection, or problem if they become and remain swollen for long periods of time.
2. ______ are pathogens that cannot be killed with antibiotics because they are non-living. They take over cellular organelles to replicate and spread.
3. Because they are also eukaryotes with their own cell membranes and membrane-bound organelles, ______ are often difficult to combat with medicines.
4. A cell signal called ______ is produced by mast cells. These molecules cause more fluid to spread to an infected area. _______ are the types of cells that produce antibodies.
5. All pathogens have unique identifying molecules on their surfaces called ______. Antibodies bind to these, and targeting the pathogen to be destroyed by the immune system.
6. ______ is a non-specific response to disease, in which the body temperature rises.
Answers:
1. Nodes
2. Virus
3. Viruses
4. Heparin, B Lymphocytes
5. Antigens
6. Fever
Explanation:
1. Lymph nodes are lumps of tissues that consist of white blood cells and help to fight against infection-causing viruses and bacteria. Swollen lymph nodes are signal of several diseases such as cancer and HIV.
2. The Virus is the pathogens which are not killed by antibiotics because virus are present in non-living form and are activated only when coming in contact with a living body. That is why Virus depends on cellular organelles for its replication and spread over the living body.
3. Viruses have similar characteristics as eukaryotes such as cell membrane, RNA or DNA, a protein capsule, and membrane-bound organelles and are not able to combat with medicines and vaccines are used to prevent viral diseases.
4. Heparin is a signal released by mast cell. These molecules prevents clotting of blood and allow blood to flow to the area of infection or injury. B lymphocytes or B cells are specialized white blood cells that produce antibodies.
5. All pathogens have a different molecules at their surface called antigen. Antibodies present in body or introduced clinically bind with these antigens and kill or stop the growth of bacteria or pathogen.
6. Fever is one of the non-specific immune response in which body temperature rises with the invasion of pathogens.
Hence, the correct answers are:
1. Nodes
2. Virus
3. Viruses
4. Heparin, B Lymphocytes
5. Antigens
6. Fever
Answer:
nodes
Viruses
fungi
histamine
B-cells
antigens
Fever
When a paper cut breaks the skin, it introduces outside microorganisms into the cut. The body recognizes the break in the skin. Mast cells produce histamines, which cause more blood and lymph fluid to flow to the wound. This increased flow brings phagocytic white blood cells to the area, which destroy invading organisms until the blood can clot and the skin can heal over the cut, preventing more organisms from entering the body. If a cut is too deep or too wide, special care such as stitches and antibiotics could be needed to prevent infection.
Explanation:
penn foster
In the modern periodic table, find the element named lead (Pb). How many protons do atoms of lead have? To which class of elements does lead belong?
Answer:
97 87
Explanation:
87
What is the next step in muscle contraction after the actin changes shape?
A. An ATP molecule binds to the myosin.
B. Myosin and actin slide past each other.
C. A calcium ion binds to actin.
D. Myosin binds to actin.
Answer:
D. Myosin binds to actin.
Explanation:
The correct option is D.
What are the steps of muscle contraction in order?
The process of muscular contraction occurs over a number of key steps, including:
Depolarisation and calcium ion release.Actin and myosin cross-bridge formation.The sliding mechanism of actin and myosin filaments.Sarcomere shortening (muscle contraction)What is the next step in muscle contraction after calcium ions bind to actin?If present, calcium ions bind to troponin, causing conformational changes in troponin that allow tropomyosin to move away from the myosin-binding sites on actin. Once the tropomyosin is removed, a cross-bridge can form between actin and myosin, triggering contraction.
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Which of the following two cycles are the most closely related in their role in sustaining life?
Answer: The following two cycles are most closely related in their role in sustaining life is, [[ carbon and oxygen. ]]
Explanation:
Answer:
he following two cycles are most closely related in their role in sustaining life is carbon and oxygen.
Explanation:
PLEASE HELP I AM BEGGING
Select the correct answer from each drop-down menu. A species of fish evolved over thousands of years to have gills that allowed the fish to swim deep in the sea. What’s the effect of this development on deep-water resources? The fish developed the gills because of _____. Because the fish are now able to swim in deep water, their____ in shallower water will have less food. Likewise, competition for food among deep-water fish that eat the same types of food will_____
1 . Genetic modification, Hybridization, or Natural selection
2.competitors,Predator, or prey
3. Decrease, increase, or Not change
Answer: natural selection, predators, increase
Explanation: