Answer: H
Explanation:
When beavers dam a stream they slow the movement of water. Behind the beaver dam, a pond of still water is formed. This pond is then colonized by animals and plants that typically live in lakes rather than streams.
Explanation:
its either a or d however i say the best choice is d
The time taken by traveler to cover the distance is,

Substitute the known values,

Therefore, the time taken by traveler to cover the distance is 89.3 s.
Linear expansivity is a type of thermal expansion. It is described by a fraction that represents the fractional increase in length of a thin beam of a material exposed to a temperature increase of one degree Celsius. ... Linear expansivity is used in many real world applications.