Classical civilizations developed whereas early river valley civilizations did not.
a. centralized governments
b. agricultural technology
c. organized religion
d. vast vampires

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.

What is the next step in the process after a substrate enters the active site of an enzyme

Where does the information about where each transcription factor binds originate?