What are molecular clocks used for
A- to cure hereditary disease
B- to classify
C- to locate fossils under water
D- to compare homologous structures

Answers

Answer 1

answer:

B-to classify

Answer 2

Answer:

to classify organisms


Related Questions

6. Seismic waves that go straight through Earth make the trip very quickly.
A. What does that tell us about the composition of Earth's center? (5 points)
B. What characteristic of seismic waves tells you this? (5 points)

Answers

The statements tell us this about  Seismic waves travel through the earth

The earth contains a lava-filled core.The direction of travel

What are Seismic waves?

Generally, Seismic waves are simply defined as energy waves that pass through the strata of the Earth due to the earth phenomenon.

In conclusion, Seismic waves tend to travel in a straight direction on earth, which contains lava-filled core.

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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?

Answers

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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In the punnet square,fill in the shaded boxes with the alleles of. Each parent. Use B for the dominant allele (black fur) and b for the recessive allele (white fur)

Answers

Answer:

male - female blck is tge answe ok

Answer:

Male - B

Female- b

combination is Bb on all

Black fur- 100%

White fur- 0%

Explanation:

right on edge

Which organisms are prey?

jackal

wildcat
Owl

rabbit

snake

mouse

green plant

Answers

Answer:

Jackals, rabbits, snakes, mice, and green plants

Explanation:

Jackals are prey to eagles, rabbits and mice are prey to snakes, snakes are prey to owls, and green plants are prey to basically any herbivore, such as deer.

Does anyone know how to graph solubility curve?

Answers

Answer:

All you need to do is draw the lines connecting the dots. I couldn't do it with this platform.

Explanation:

Growing two species of
Paramecium in the same test
tube is an example of?
A. Intraspecific competition
B. The founder effect
C. Interspecific competition
D. A population bottleneck

Answers

Answer:

Intraspecific Competition

The answer is A intraspecific competition

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.

Answers

Answer:

probley

Explanation:

A. get the last season's flu virus

or

C. Immune to last season's flu virus

The answer would be C: immune to last season’s flu virus this would be that your immune system has already created anti bodies getting rid of the last season’s flu once the immune system has defeated a infiltrator it would create memory cells to be able to create the required anti bodies next time an invader like this would attack your immune system

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.

Answers

Answer:

It dominates the phenotype

Explanation:

homeo- comes from a greek word means still the suffix stasis comes from "stoppage" or "standstill" how does this relate to homeostasis

Answers

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:

PLLLEAAASE HELP!! This presentation will explain how energy from the sunlight is used during photosynthesis
• Detailed descriptions of what happens during
A) photosynthesis (the light-dependent reactions and the light-independent reactions)
B) transitioning between photosynthesis and respiration
C) cellular respiration or fermentation
• An explanation of how the molecules in photosynthesis and cellular respiration are similar. Please include descriptions of the molecules involved in
each of the processes above.
• Complete sentences should be used in all written descriptions and explanations
• Illustration , diagrams, or images that help explain the transition between the reactions of photosynthesis and cellular respiration
A) You can create your own images, or use images from websites or other sources
B) if you use premade images, you will need to give a reference of the source of that image and create your own unique caption to describe the
image
Your presentation should be detailed and organized, but it can be presented in a variety of ways
• ustrated story
• slide presentation
. comic strip

Answers

Answer:

Detailed descriptions of what happens to the carbon atom:

during photosynthesis (the light-dependent reactions and the light-independent reactions)

transitioning between photosynthesis and respiration

during cellular respiration or fermentation

An explanation of how the carbon atom is transferred between molecules. Please include descriptions of the molecules involved in each of the processes above and be sure to mention the movement of electrons and energy as the carbon atom moves from one reaction to another.

During cellular respiration:

The cell is oxidized.

Transitioning between photosynthesis and respiration:

It is taken from CO2 converted to glucose then either converted back to CO2 or it is used for other processes and may expelled another way.

How is the carbon atom transferred between molecules:

The electrons move through a series of electron carrier proteins, called the electron transport chains, within the thylakoid membrane.For every 12 of the resulting three-carbon molecules made, two are removed to build organic compounds and 10 continue on in the cycle. The two three-carbon molecules that are removed bond together, forming a six-carbon sugar such as glucose.

What happens to the carbon atom during:

Photosynthesis: carbon is taken in from the air, in the form of carbon dioxide and through the energy provided from sunlight it is converted to a carbon chain known as a sugar.

Explanation:

I did this in 4th grade.

What do biotechnologists use to cut DNA molecules at specific sequences? transformation DNA polymerase DNA ligase restriction endonuclease

Answers

Answer:

Restriction endonuclease

Explanation:

It cut the DNA at specific sequence and it is very useful in biotechnology

In the phosphorous cycle, phosphorous enters the food chain when

A: it is in atom form
B: it is in the form of phosphate and bound in solids
C: it is the form of phosphate ions and dissolved in water
D: it is exposed to the air during weathering

Answers

Answer:

The correct answer is option C.

Explanation:

The biogeographical cycle that tells about the movement of the phosphorous in the different spheres such as the lithosphere, geosphere, biosphere, and hydrosphere known as the phosphorous cycle.

In the soil and sediments, the phosphorus is present in the form of ions and dissolved in water, which is move through the roots to the plant and enters in the food chain and biosphere.

Thus, the correct answer is - option C.

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

Answers

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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When an animal consumes
food what percent of the
food's energy is used for
growth?

A. 5%
B.30%
C.40%
D. 10%

Answers

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.

How are air and ocean currents linked?

A. Cold water
produces low-lying,
high-pressure wind
currents and warm
water produces
higher, low-pressure
wind currents.

B. Low-lying, high-
pressure wind
currents produce cold water currents and higher, low-pressure wind currents produce warm water currents

C.Warm water produces low-lying, high-pressure wind currents and cold water produces higher, low-pressure wind currents.

D.Low-lying, high-pressure wind currents produce warm water currents and higher, low-pressure wind currents produce cold water currents.

Answers

Answer:

c

Explanation:

because the ocean current circulates the warmth into cold wind current during the day

The image shows a paramecium and a bacterium. One of these organisms is very good at rapidly adapting to environmental changes because it has the ability to take in stray genetic information from the environment. Which structure allows the organism to do this?

Answers

Answer:

The bacteria forms new kind of cells to adapt to a new environment. This adaptation is under tight genetic control, involving the expression of multiple genes.

the bacteria need to adjust their enzyme levels in order to quickly benefit from the nutrient mix that is currently available in the surrounding.

If the living environment undergoes a sudden change, the bacterium's own production of proteins has to fulfill these changes in an effective way.

*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

Answers

Answer:

The answer is option B.

Thermal pollution

Hope this helps you

B thermal pollution hope this helps!

how are ionic compounds and covalent molecules different

Answers

Answer:

Ionic compounds are formed by the transfer of elecrons from highly electropositive element to highly electonegative element.

Covalent compounds are formed by the shairing of electrons between elements.

Explanation:

ionic compound = soluble in water
covalent compound = insoluble in water

_____ is a product of photosynthesis that becomes
food for the autotrophs that produce it.

Answers

i believe its glucose

Answer:

Glucose

Explanation:

Glucose is a product of photosynthesis that becomes food for the autotrophs that produce it.

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.

Answers

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.

Mechanical weathering _____ change the composition of a rock, whereas chemical weather ______. Question 8 options: Does; does not Does not; does

Answers

Answer:

Mechanical weathering does not change the composition

Chemical weathering does change the composition

Explanation:

What are the applications of Bioanalytical Service?

Answers

Explanation:

hope its wht u r searching for

The lipid composition of the membranes of different organisms can vary, depending on the organism's environmental conditions. Which of the following best describes the hydrocarbon tails in the phospholipid bilayer of organisms that thrive in extreme cold? They will be unsaturated to prevent packing, decreasing viscosity. They will be saturated to prevent packing, decreasing viscosity. They will be unsaturated and pack together to increase viscosity. They will be saturated and pack together to increase viscosity

Answers

Answer:

They will be saturated and pack together to increase viscosity.

Explanation:

Hope it helps.

Design an experiment that would help you collect the data you have identified in question four independent variable - x , dependent variable - y.

What is independent variable?

The indepent variable is something that is stable , it does not change & the dependent variable is that variable that depends on the independent variable.

The experimenter's chosen variable or variables are considered independent. The anticipated "cause" will be this manipulation. The independent variable's value determines how much the dependent variable is worth.

The result of the cause will be this (if the manipulation succeeds). One group of volunteers receives a medication, while the other receives a placebo. Cancers diminish in the medication group but they do not in the control (placebo) group.

Therefore, Design an experiment that would help you collect the data you have identified in question four independent variable - x , dependent variable - y.

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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

Answers

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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The connection between producers and consumers is that only

a: heterotrophs can perform photosynthesis to produce energy for all life

b: heterotrophs can perform cellular respiration producing oxygen for all organisms

c: producers use cellular respiration to produce energy for all life

d: autotrophs can use sun energy to produce energy for all organisms

Answers

D. Producers/autotrophs can convert energy from the sun into a form that is available for consumers/heterotrophs to use.

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

Answers

It’s a the lack of interference from cell parts

Scientific explanations are the result of scientific reasoning. Whenever scientific reasoning is used,
takes place.

Answers

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.

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?

Answers

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:

PLEASE HELP ME!! ASAP Why is it so difficult to tell the impact of pollution in the deep ocean region?

Answers

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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An example of subjective information is: a. five petals b. red stem c. shrub d. beautiful leaves

Answers

Answer: The answer is D - Beautiful leaves.

Explanation: Subjective data is gathered from the patient telling you something that you cannot use your five senses to measure. If a patient tells you they have had diarrhea for the past two days, that is subjective, you cannot know that information any other way besides being told that is what happened.

Answer:

the correct  answer is d

Explanation:

i have done lessons on subjective information

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what is most likely mr whites final wish Determine whether the samples are independent or dependent. upper a data set includes the morning and evening temperature for the lasta data set includes the morning and evening temperature for the last 90 days.90 days. factorize xsquare-25 The authors state in the general procedures that the reaction was monitored by TLC. How would this be done? What would you spot in each lane? How would you know the reaction was done? How many total, non-unique alleles are there for each gene in a population of 250 humans?a- 250b- 1000c- 125d- 500 Pocahontas School District, an independent public school district, financed the acquisition of a new school bus by signing a note for $90,000 plus interest on the unpaid balance at 6%. Annual principal payments of $30,000, plus interest, are due each July 1. Assuming that the District maintains its books and records in a manner that facilitates the preparation of the fund financial statements, the appropriate entry in the General Fund at the date of acquisition is:_________.A) Debit Expenditures $90,000; Credit Notes Payable $90,000.B) Debit Fixed Assets $90,000; Credit Notes Payable $90,000.C) Debit Expenditures $90,000; Credit Other Financing Sources $90,000.D) Debit Fixed Assets $90,000; Credit Other Financing Sources $90,000. A network security analyst received an alert about a potential malware threat on a users computer. What can the analyst review to get detailed information about this compromise? Check all that apply Which of the following is a perfect square trinomial ? PLEASE HELP!!!!!!!!!!!!!!!!! In her research paper, Kirstein copied a few paragraphs from a renowned author's work verbatim without placing them within quotation marks or citing the source. The review board rejected her paper on grounds of plagiarism. In this scenario, Kirstein has committed:_________. Please help!!! I'm really confused. In which ways did the Indus River help the Harappan civilization thrive?A) The river provided fertile farmland and good trade routes. B) The river helped make the Harappan people good swimmers and sailors. C) The river flooded the cities and poisoned well water. Pleasseeee help me It's for a test Mars is extremely far from the Earth. Scientists estimate that it could take astronoauts 245 days to travel from Earth to Mars. This is more than half of a year! Suppose astronauts travel to Mars when the distance between Earth and Mars is 108 million miles. If the trip takes 245 days, on average, how many miles would be traveled each day? In your calculator, write the large number as a multiple of a power of 10 to compute the answer. Round to the nearest mile. Based on what you've read, answer the following questions. What term is used to describe a sudden revelation in a short story? Explain how irony is used in literature. Define situational irony. Is 15/3=v/7 a true proporation? Help Please I'm Out Of Time ;( Is it true that every whole number is a solution of x > 0?Use complete sentences to explain your reasoning. duties of an office clerk which graph represents the hyperbola x2/32-y2/82=1? Which expression gives the distance between the points(1,-2) and (2, 4)?A. (1+2) +(2-4)O B. (1-2)2+(-2 - 4)C. (1+2) +(2-4)O D. (1-2) +(-2-4)SUBMIT The cells in this part of a plant form long, vertical tubes. What is the mostlikely relationship between the structure and function of these specialized cells? A. The tubes allow the plant to absorb sunlight for photosynthesis. B. The tubes prevent potential damage to the leaves caused by strong winds. C. The tubes prevent water loss from the leaves. D. The tubes allow water and nutrients to be transported throughout the plant Mi nombre es doctor Ledesma y tengo unos consejos para usted no comas tanta grasa haga ejercicios para mantenerse saludable busque un pasatiempo para mantener la mente ocupada no coma tantos dulces Based on the senetnce, what would be an activity that the doctor might recommend to stay healthy? Running Eating smaller portions Doing yoga Taking vitamins