Answer:
This information is important because many scientists discovered that exercising promotes chemicals in the your brain that bring up your mood and make you feel relaxed. When you exercise the brain releases chemicals called endorphin that make you feel good. Endorphins help depressed moods, which Andre seems to experience.
The answer is D.
Compound sentence uses one independent clause and one dependent clause. In option D, “after they finished studying” is the dependent clause. “Juan and Maria went to the movies” is the independent clause.
They change shape due to a number of reasons.
The easiest reason to understand why they change is that they erode.
The coasts around the the world erode due to waves hitting cliffs, the wind batting against the coasts etc. Over a long period of time we can see that they change in shape.
(sorry I don't know why they move)
