The answer is B (speed up chemical reactions).
Controlled burning? I think that's right.
Answer:
One Idea was the appreciation that the age of the Earth was much greater than had hitherto for been imagined.
The scientists' conclusions are most likely unreliable because <u>he asked the wrong set of people for his survey.</u> By definition, environmentalists are those people who are inclined to believing that humans are entirely responsible for creating biological foot prints all over the Earth. They always advocate the protection of the environment and even persuade people to follow suit. It is natural for them to react in such a manner that they find dams as something harmful because to them, dams destroy the natural cycle of Mother Earth.
