Answer:
If the animal shows it often like a color change or a slightly bigger or smaller body part
Explanation:
Answer:
The study of oceans and their life.
Explanation:
The study of oceans, including seawater, the ocean floor, and marine plants and animals.
The direct source of energy to move the sailboat is probably wind, since wind is what pushes the sail of the sailboat, which is what propels the sailboat forward.
Hope this helps!