What do scientists use to study precambrian time? fossils from algae and other plants fossils from tiny microscopic animals ore from eroded and deformed rocks ore mined from deep inside the crust?

Ore from eroded and deformed rocks.

Explanation:

Precambrian is the name of the largest division in the earth's geological time. Corresponds to the set of Proterozoic, Archean and Hadean eons. It predates the Fanerozoic eon. Precambrian covers 90% of the earth's geological record. Only at the end of this peril did multicellular organisms evolve and sexual division developed. Also at the end of Precambrian conditions were created for the explosion of life recorded at the beginning of the Eero Fanerozoic.

These reasons make this period so important to science and are the basis of countless research and studies that seek to understand how this period contributes and influences life on our planet. When scientists want to do some study based on this period, they use ore from eroded and deformed rocks that may have been generated at that time.

chert is a sedimentary rock composed of microcrystalline or cryptocrystalline silica. with this little bit of information, you can come to the conclusion that your answer is c.  

explanation:

c is the answer to this question. altitude affects the weather because air molecules evaporate.