Ocean acidification is only a threat to the united states.
a. true
b. false

rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.

a. 35°c

b. 25°c

c. 10°c

d. 40°c