A Tree or a living thing. AS apposed to abiotic, meaning nonliving.
ex. a rock.
Chemical weathering refers to the erosion or total disintegration of rocks that are caused by chemical reactions and not by mechanical processes. Usually water and other liquid substances causes this to occur. Skyscrapers or buildings are prone to chemical weathering because they are constantly exposed to precipitation and other elements in the atmosphere. In rocks, when this process happens they tend to crumble and form smaller rock pieces. It is important to note that during this stage, the end product is a totally different substance than its original phase.
Fermentation if oxygen is not present
point, shift deletion, UV rays, radiations, genetics mutations, gene editing
That is just some method that gene can change within the DNA
i think that -5 will be the answer
