Answer:
Trees remove carbon dioxide from the atmosphere. Carbon dioxide is a greenhouse gas that causes global warming.
Explanation:
Trees take in carbon dioxide and release oxygen. Deforestation gets rid of trees, so carbon dioxide is no longer being absorbed. Since carbon dioxide is a greenhouse gas, meaning that it traps heat in the Earth's atmosphere, too much of it causes global temperatures to rise.
During freezing. Freezing is a type of fossilization in which everything is preserved. An example would be finding a woolly mammoth frozen in a glacier.
Because it is catalyst which speeds up or slows down the speed of the chemical reaction without being changed or used up