Polluting the earth with garbage
And too many greenhouse layers can harm the ozone layer.
autism
The sky is pale blue in higher altitudes while it is deeper blue in lower altitudes. This is because there is more air molecule closer to earth surface (as a result of higher air pressure) than higher altitudes. The air molecules are responsible for scattering of sunlight hence giving the sky its blue hue. The more the air molecules the more the scattering.
The main idea of this paragraph is A
There's actually an entire documentary made about this certain fish, its name is Parrot Fish.
The reason for its name is because it has a beak, which it uses to bite and eat through coral.
And at the end of the day, when the fishes poop, it turns into sand.
For example, one 2010 study in Marine Biology found that large parrotfish in Hawaii can churn out 840 pounds of eroded coral—i.e. white sand—per year. A single giant humphead parrotfish can produce 11,000 pounds of sand per year.
hope this helps!