Some people say love makes the world go around.

Others say it is not love; it's money.Since the __1__

truth is that it is energy that makes the world

go around. Energy is the currency of the ecological

system and life becomes possible even when food is __2__

converted into energy, which in turns is used to seek

more food to grow, to reproduce and to survive. In this __3__

cycle all life depends. It is fairly well known that

wild animals survive from year to year by eating as many as __4__

they can during times of plenty, the summer and fall,

storing the excess, usually in the form of fat, and then

using these reserves of fat to survive during the hard time __5__

in winter when food is scarce. But it is probably less well

known that even with their stored fat, wild animals spend

less energy to live in winter than in summer. A good case

in point is white-tailed deer. Like most wildlife, deer __6__

reproduce, grow,and store fat in the summer and fall

when there is plenty of nutritious food available. A

physically mature female deer in the good condition who __7__

has conceived in November and was given birth to two fawns __8__

during the end of May and first part of June, must search

for food for the necessary energy not only to meet her

body's needs but also to reproduce milk for her fawns. The __9__

best milk production occurs at the same time that new plant

growth is available. This is good timing, because milk

production is an energy consuming process -- it requires

a lot of food. The need can be met unless the region has __10__

ample food resources.