<span>Geologists generally know the age of a rock by determining the age of the group of rocks, or formation, that it is found in. The age of formations is marked on a geologic calendar known as the geologic time scale. Development of the geologic time scale and dating of formations and rocks relies upon two fundamentally different ways of telling time: relative and absolute.</span>
Bacteria in soil feeds on dead organisms.
I think the answer is two
Sun heat highly temperature. water was can vapor atmosphere
The rabbit population would expand because the fox is a predator
