HELP!! What evidence do fossils provide geologists about the history of the Earth?
A. Living things have remained the same over time.
B. Environmental conditions have changed over time.
C. The amount of water on Earth has changed over time.
D. Environmental conditions have remained the same over time.

C, h, o - elements that are common to biomolecules. if the biomolecule in question is a protein these elements also combine with nitrogen. which molecule below is a protein?

What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes