Answer:
I'm pretty sure its Very few small plants, because the trees block all the sunlight.
Looks as if the plate faults, with them rubbing against each other and always moving, mountains are created by plates joining together and going upward for them no where to go.
They don't swell because of osmosis.
The answer would be C sand dune
The first one is C. Varying in shapes of forelimbs
The second one is B. Enable members of a phylum to survive and reproduce.
The third one is B. Deuterostome development