A bear is placed in a laboratory whose interior is designed to precisely mimic its natural environment. However, the environment is kept in full light 24 hours a day, 365 days a year. Which of the following is the bear likely to do?1) attempt to mate.
2) behave normally.
3) stop foraging.
4) fail to hibernate.

4) fail to hibernate

Explanation:

Animals, such as bear, tend to hibernate when the conditions of the environment become harsh for them. As a result, the go to hibernation mode for that period of time. Bears usually hibernate during the winter season when the temperature outside becomes lower.

When a bear will be placed in the laboratory with constant sunlight, the bear will fail to hibernate as the bear will have no burrow or cave for hibernation and also he might consider the light source as conditions being warm.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.