A. There were animals 3 billion years ago; they just weren't fossilized. B. Animals are warm-blooded; the ocean was too cold for animals.
Answer:
0 meters
Explanation:
When we talk about displacement, think that the think of it as the measure of the distance between the starting point of the object, from its end point.
Since we are talking about a lap around a track, it would mean that the starting point is also the end point. So if you started and end at the same point, the distance between it would be 0.
Answer:
Poverty is the root of all evil in this situation along with gendder discrimination. Because of the social unpopularity regarding females and because many women lie below standard income, they simply cant afford or just refuse to have kids.
Explanation:
Answer:
They have a backbone, most use legs,wings,or fins for movement.
