Explanation: pH is a measure of the acidity or alkalinity of a solution. What the pH scale measures is basically the concentration of hydrogen and hydroxyl atoms in a solution. So, the last option is the answer. Another thing to keep in mind is solutions with a pH under 7 are acidic, solutions with a pH of 7 are neutral, and solutions with a pH over 7 are alkaline or considered a base. I hope this helped! Good luck:)

7 0

3 years ago

What are the sources of oxygen for aerobic respiration

Mashcka [7]

Answer:

Oxygen comes from the lungs and blood carries the oxygen to body cells. (Blood flow or circulation).

4 0

3 years ago

Male lizard displays his brightest colors, inflates a rust-colored throat sack, and bobs his head up and down, all in an attempt

Pepsi [2]

A male lizard will do this to attract a mate.

3 0