Answer:
Physical
this type of weathering is known as freezing and thawing
A system of grouping things according to levels or order
Hope it helps
Hello Mlevintova, <span>Who first proposed the principle of the heliocentric theory, </span>Aristarchus of Samos was an ancient Greek astronomer and
mathematician who presented the first known model that placed the Sun at
the center of the known universe with the Earth revolving around it.
It refers to the idea as cells are the basic unit of structure in every living thing.