If all plants were to die, photosynthesis wouldn't occur and that would affect the ecosystem because every other biotic organism would not have oxygen to breathe.
The elbow is made up of the humerus, radius and ulna so your answer is A
Ell theory refers to the idea that cells are the basic unit of structure in every living thing.
One group of reptiles, characterized by the fossil Archaeopteryx, led to the evolution of birds. The correct answer is birds
