Natural pollution includes smog. Smog is a combination of smoke in an air and fogs.
When you say natural pollution, it is not being caused by human rather caused by a natural resources or organism.
Falling leaves are natural, but its not a pollution.
A scientific variable is any factor that can be changed or controlled
Answer:
this one is a hard one ask my freind utterfudolphin
Explanation:
Well, they don't really choose to, but species can adapt to fit their current habitat and conditions
