Which of the following is a type of skeleton?

a) exoskeletons

b) internal skeletons

c) fluid filled body cavaties

d) all of the above

Fossils found in a cave at krapina, croatia, show evidence of: a. cannibalism. b. all of the above. c. speaking ability. d. pottery production.

Who was the first scientist to sound the alarm about the growth of the human population and the ability of the earth to handle a large population of humans?

Selective breeding is the best way to combine traits from two different species. a. True b. False

What taxonomic level contains the least diversity?

Which of the following is not created as a result of dehydration synthesis? A. Cellulose B. disaccharide C. glucose D. water

To test the effect of vitamin d on growth, two groups of rats were raised under identical conditions and fed the same diet. one of the groups received daily injections of vitamin d.

A researcher isolates a mutant variant of the bacterial translation factor ef-g. the mutation allows proper folding of the protein and binding of gtp, but does not allow gtp hydrolysis.

Which organ is part of two different systems?

2. Describe a flood along a coastline. What might cause this?

What kind of animals are found in the owl pellet ecosystem?