Answers created by Indrani R.

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• How are DNA chromosomes and genes related?
  
• What is speciation?
  
• Describe why photosynthesis is important. Give specific details.?
  
• What is the primary productivity of an ecosystem?
  
• Why is water an important solvent for living things?
  
• How does acid rain affect life in rivers and lakes?
  
• What did Charles Darwin observe in finch populations on the Galápagos Islands off the coast of South America?
  
• Question #d66c6
  
• How can vegetation and wildlife be preserved?
  
• Question #c9d9f
  
• What system of the echinoderms enables them to move about?
  
• Question #5844c
  
• Question #3ed62
  
• Is there any explanation for fast rate of division of bacterial cells which prevents further growth of individual cells?
  
• What is a Grizzly Bear's classification?
  
• Why would information on comparative embryology be useful to show that certain bones are homologous?
  
• Question #0f0d5
  
• How do golgi bodies work?
  
• The theory of endosymbiosis describes the probable evolution of what type of cell?
  
• Question #2903e
  
• Human hormones testosterone and estrogen are considered lipids. What could be the reason for this?
  
• Question #7e1af
  
• DNA is a macromolecule. How are nucleotides arranged in DNA?
  
• What are some examples of situations where a cell might use phagocytosis or exocytosis?
  
• What is the act of putting organisms into different slots called?
  
• Question #23c16
  
• How do humans affect the phosphorus cycle?
  
• Question #d28ab
  
• Which character of vertebrates is associated with colonization of land?
  
• Which type mutation will affect the largest number of proteins produced by an of organism?
  
• Question #c517c
  
• Why are all enzymes are proteins, but not all proteins are enzymes?
  
• The problems of survival of animals on land are very different from those of survival of animals in an aquatic environment. What are four problems associated with animal survival in terrestrial environments but not in aquatic environments?
  
• Why is archaea important?
  
• In the biosphere, what are some of the major abiotic factors that determine the distribution and types of plant communities?
  
• What are the positive impacts of dissecting animals?
  
• Why do scientists study animal behavior?
  
• How do the nutrients from food get into the cell?
  
• What do plants and animals have in common?
  
• Why should we protect nature?
  
• Why do we recover completely form a cold but not from polio?
  
• Question #d0577
  
• What most likely happens to the rate of reaction of a human enzyme when the temperature is increased gradually from 10 degrees Celsius to 30 degrees Celsius?
  
• Question #a08ef
  
• What are organisms that cannot make their own food and must obtain energy from external sources called?
  
• Why are some animals already extinct?
  
• Alyssa finds an organism in her yard that is growing underneath an old fencepost? It lives in a very dark, moist environment on decaying leaves. It grows three inches tall within one week, and it is attached to the ground. In which kingdom should this org
  
• Why is meiosis not a part of the cell cycle?
  
• How do dogs control their temperature?
  
• How are the wings, beak, and feet of an eagle well adapted to its niche?
  
• Why is photosynthesis important for life on earth?
  
• Can a plant survive without oxygen?
  
• How do flatworms, roundworms, and segmented worms differ from each other?
  
• What are some limiting biotic factors?
  
• What do animals and plants produce in cellular respiration?
  
• How has science and technology affected human population growth?
  
• What is global warming? How does it affect ecosystems?
  
• How does the fossil record reveal the history of life on earth?
  
• How did Humans come in existence?
  
• How are humans affecting biodiversity?
  
• Question #7b381
  
• How are a mushroom and a humpback whale alike?
  
• Every year, a new influenza vaccine is developed. Why don't doctors use the same vaccine each year?
  
• Question #6eaf2
  
• Why is population growth for human populations a problem?
  
• Question #c7d4c
  
• What is a brief history of life on earth?
  
• What are the functions of the placenta and umbilical cord during pregnancy?
  
• How are atoms and molecules important to cell processes?