Maintaining a stable internal environment
Over the Earth’s surface, the ozone layer’s average thickness is about 300 Dobson Units or a layer that is 3 millimeters thick.
The average amount of ozone in the atmosphere is roughly 300 Dobson Units, equivalent to a layer 3 millimeters (0.12 inches) thick—the height of 2 pennies stacked together.
Answer:
D) The moths are living in an environment with dark trees.
A decreased number of pathogens in the human body
