The electrons for photosynthesis come from:

Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.

There are only about 250,000 known fossil species. true or false

The largest unit within which gene flow can readily occur is a