If you look into a pond or a calm river, you may see a clear reflection of yourself. What does this tell you about the surface of the water?

Body temperature is tightly regulated in mammals for example when external temperatures drop too much the body of a mammal responds by in order to its core temperature?

Which of the following is a good definition for the word adaptation? question 1 options: a trait that an organism survive and reproduce in its environment. a change in an organism's environment. the way in which animals obtain food. a temperature change that can cause the extinction of plants and animals.

Hydroelectric uses moving water to do work such as grinding grains in a mill true or false