I believe it is the outer crust but i will do more reaserch for you :)
I think it is b because since it refers to climate vegetation it could be b mostly other answers dont make sense
M
Because I took this class last year
But I’m also guessing
Climate change is happening, it is caused in large part by human activity, and it will have many serious and potentially damaging effects in the decades ahead. Greenhouse gas emissions from cars, power plants and other man-made sources—rather than natural variations in climate—are the primary cause. These emissions include carbon dioxide — the main greenhouse gas — which has reached a concentration level in our atmosphere that the Earth hasn’t seen for more than 400,000 years. These greenhouse gases act like a blanket, trapping the sun’s warmth near the earth’s surface, and affecting the planet’s climate system.
False, now good job to me and ya'll can really tell me thanks or helping yall out to the wrong answer.
