Which type of molecule stores the main source of energy used by animals?
a.) lipids
b.) proteins
c.) glycogen
d.) starch

c.) glycogen

Explanation:

Glycogen is a polysaccharide which is stored as an energy molecule in animals, bacteria and fungi. It is formed by a chain of glucose molecules. The average chain length varies from 8 to 12 glucose units. The glucose units are linked together by α (1-4) glycosidic linkage. The glycogen breaks down into glucose units so as to provide energy to the cells for performing various metabolic functions.  

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation: