B, because in all truth and honesty, stress is truly inevitable. Also, use process of elimination. I hoped that helped :)
They help because if you can adapt to things a camouflage evolution will be eaiser.
Answer: salivary glands
Explanation: i just remember from 4th grade health class
Clouds form when moist, warm rising air cools and expands in the atmosphere. The water vapor in the air condenses to form tiny water droplets which are the basis of clouds.
