Biology

what do dna evidence and the fossil record indicate are the ancestors of the living cetaceans, the mammalian group that includes whales, dolphins, and porpoises?
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(I'll give Brainliest to whoever replies the faster) How far apart are Y and L? Give your answer in map units. (Hint: Add the numbers of the two recombinant types, divide by the total number of offspring, and multiply by 100.)
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astronomy is the study of the ___ beyond earth.astronomers are scientists who study:. _____ .___ systems.. ______. galaxies.Fill in all the blanks plssss.s
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significance of soil air
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2. part of a plant is removed to grow another plant
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PLEASE HELP! MAJOR QUESTION FOR ASSIGNMENT! WILL GIVE BRAINLIEST!Describe the reproductive process of an angiosperm, from pollen production through the formation of a seed.
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What is the difference between a population and a community?Multiple choice question.cross outA)A population is made up of all species in an area. A community is made up only of one species.cross outB)A population is made up of only one species. A community is made up of all species in an area.cross outC)A population is made up of all the species and nonliving things in an area. A community is made up of all species in an area.cross outD)The words mean the same thing.
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Multiple sclerosis is a disease in which the myelin sheaths of neurons in the central nervous system break down. What symptoms might this cause? Why?
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what birds is a likely biological explanation for TheMothman?
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True / False HIV is unique because it copies the information for reproduction from RNA back into DNA.
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From new moon phase to full moon phase, what do you see?1. a decreasing amount of the lighted side of the Moon2. the same amount of the lighted side of the Moon3. an increasing amount of the lighted side of the Moon I need an answer ASAP!! I will give you a brainliest!!
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Wich of the following occurs in all species of living organisms and may lead to an increase in genetic variation?
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This graph shows the harbor seal population in the gulf of Maine for a twenty year period. A population of seals with unlimitedresources will continue to grow exponentially as shown in the graph above. What are some density-dependent limiting factors thatwould prevent continued exponential growth? Choose ALL that apply.es )
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HELP i need this question fast pls anyone i will mark brainliest
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Which one of the following provides natural passive immunity colostrums milk powder water with sugar vaccination
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What would happen if any of the biogeochemical cycles would break
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On average, men have a basal metabolic rate (BMR) of 1.0 kilocalorie per kilogram per hour. Lawrence weighs 198 pounds. Calculate how much energy Lawrence expends for basal metabolism per day.
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SOMEONE PLEASE HELP ME!!!!!!! In a phrase, tell me what each scientist did to help develop the cell theory. Scientists: Hooke, Leeuwenhoek, Schleiden, Schwann, and Virchow
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Which type of cytoskeletal element is characterized as a hollow, rigid cylindrical tube with walls composed of tubulin subunits
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The scientific community disagrees about _______. A. The rate of global climate change b. The occurrence of global warming c. The need for action d. All of the above Please select the best answer from the choices provided A B C D.
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What is the haploid number of this species ?
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How are human beings and chimpanzees phylogenetically related?A. They share a common ancestor.B. They share the ability to use tools.C. They both belong to the animal kingdom.
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Phenomenon: Miss Westbrook visited family in Aspen last spring. Aspen is in Colorado and has an elevation of 8,000-9,000 feet. The Bay Area has an elevation of 0-100 feet. Miss Westbrooks breathing and heart rate both sped up every time she went hiking or skiing in Aspen. Why do you think this happened? Hint: Your brain regulates the rate and depth of your breathing to match the needs of your body for 02 intake and CO2 removal.Breathing rate refers to the number of breaths per minute.
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Which of the following should be included in a good conclusion?
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