Why do organisms break down complex molecules of for into smaller molecules

These molecules are passed along the food chains. When plants and animals die, the complex biological molecules are decomposed. Dead organisms are broken down into smaller pieces by the process of decay.

Explanation:

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.