Answer:
Hydra are simple freshwater animals, while Obelia lives in the sea or fresh water
Explanation:
The main difference is that Hydra's body shape is a polyp, while Obelia consist of polyps and medusae in its life cycle
Answer:
As it gets closer to the sun.
Explanation:
Hope this helps and one of the mods doesn't take it down.
Gravity pulls the ball down,and friction slow the ball down.
<span> A scientific law always applies under the same conditions, and implies that there is a causal relationship involving its elements.</span>