Answer:
A Starfish is Triploblastic meaning they consist of three germ layers. Hydra are diploblastic meaning they consist of only 2 germ layers.
Similar, because pressure increases in both as you go deeper; different because Earth's inside temperature increases as you go deeper, not true in a pool's water.
I think that b is the correct
The answer is A. Mutualism. Both the flower and the insect benefit from the relationship; the flower is pollinated and the bee gets nectar.
We need the answer choices but I found a helpful chart for you
