if you had to define ecological succession in your own words in a 140 characters text, how would you define it?

The human body needs energy in order to carry out life processes such as breathing. where does the body get this energy? a. from eating food b. from learning about new things c. from lying in the sun d. from sleeping

The image shows a group of fish. the type of social behavior shown in the image is called

The part of the eye that closes and opens to let light in is .