Answer:
here is your answer
Explanation:
In biology, a population is a number of all the organisms of the same group or species who live in a particular geographical area and are capable of interbreeding
Sweating in response to external stimulus
Primary producers make their own food for example plants. As you go into the upper levels of the food chain the energy gets distributed to each level, but they lose some of their energy. Without primary producers alligators will not be able to obtain the energy they need for themselves to survive.
The type of thermal energy which flows from one substance to another when the temperature of the two substances is different is known as heat. Hence, the blank can be filled with 'heat'.