Lichens (small green plants) growing on a large boulder release enzymes and other acids that slowly break the rock apart. This is an example of:Required to answer. Single choice. (1 Point) plant acids exfoliation abrasion

plant acids

Explanation:

A lichen consists of a photosynthetic microorganism such as, for example, a photosynthetic green alga, which is surrounded by the filaments of a fungus. Moreover, chemical weathering is a gradual process where chemicals react with the minerals in the rock to form new minerals, oxidize or simply dissolve them. Lichens can lead to chemical weathering of rocks via the excretion of organic acids (e.g, oxalic acid) capable of dissolving minerals and chelating metallic cations.

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

wegner's theory did not explain how the continents could move

explanation: