Answer: Because we never see it illuminated by the sunlight.
Constructive plate boundaries
Answer:
Option-A
Explanation:
Radial symmetry refers to the symmetry in which the organism can be cut into the same half through any plane which can be observed in the organisms belonging to Cnidarians.
The organism with radial symmetry do not show a distinct head region and are considered to be passive drifters like observed in the corals, sea anemones, starfish.
Thus, Option-A is correct.
Your heart is actually a muscle. It's found a little to one side of the center of your midsection, and it's about the extent of your clench hand.
Yet, the heart muscle is unique on account of what it does. The heart delivers blood throughout your body. The blood furnishes your body with the oxygen and supplements it needs. It likewise diverts waste.