Newton's First law of motion: An object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force.
This is also known as the law of inertia
Anyways, you feel tossed around because unbalanced forces are acting upon you while riding on a roller coaster. Hope this helps!
The homology of animals is based on scientists current understanding on the evolutionary history of living species.
I believe it is organ level
During photosynthesis, carbon dioxide and water combine to form glucose (the plant’s energy). When there is not enough water, the plant cannot produce any glucose, even if there is light and carbon dioxide
