Which statement describes the role of a mitochondrion in providing a body with energy?
1. it stores glucose that is taken from food so that respiration can happen later.
2. it combines blood and oxygen so that energy can be released from glucose.
3. it is the site where oxygen combines with small molecules and releases large amounts of energy.
4. it is the site where food is broken down into small molecules and amounts of energy.

Mitochondria is the site where oxygen combines with small molecules and releases large amounts of energy.

Mitochondria is a cell organelle

It produces ATP, which is considered as energy currency of cell.

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.