Which sentence is unnecessary and could be eliminated without disturbing the flow and information of the paragraph? a) these variations may cause animals to go into hibernation or to migrate, and plants to be dormant. b) it is scientifically fascinating how bears and other animals instinctively know when to hibernate. c) it is the tilt of the earth that causes the sun to be higher in the sky during the summer months which increases the solar flux. d) seasons result from the yearly revolution of the earth around the sun and the tilt of the earth's axis relative to the plane of revolution.

B) It is scientifically fascinating how bears and other animals instinctively know when to hibernate.

Explanation:

I could not find the paragraph that is missing in your question but I will tell you some my opinion on it and information that can help you to solve it on your own.

The sentence B is the only one that is showing some sort of fact of someone that is unnecessary for any paragraph because it is not giving us the information that we don't know(like the other answers do). It is giving us an opinion of some person that is not helpful for understanding the idea of the paragraph.

In other sentences we can see helpful information of something that are describing relationship between nature and animals.

particulars about treasure island, from the beginning to the end, keeping nothing back but the bearings of the island, and that only because there is still treasure not yet lifted, i take up my pen in the year of grace and go back to the time when my father kept th

explanation:

your awnser would be b.