What was the name of the original supercontinent that wegener proposed in his theory?   a. atlantis   b. gondwanaland   c. laurasia   d. pangaea

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

During the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

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