They give more/additional information about a certain topic of research.
They help learns to know what they may expect to see on the field
Answer:
A
Explanation:
Ecosystem X is a suffering habitat after the major disturbance. The animals have become endangered. its become a secondary Succession.
"Casablance" is an example of the mis-spelled name of
a city in Morocco or a classic Humphrey Bogart movie.
The Earth's mantle is very important. It is important for the Earth's crust evolution, as well as being the provider of thermal and mechanical forces for plate tectonics. The mantle is what covers the most part of Earth inside if it is not there, then the heat of the core will burn the Earth's crust. And the mantle does make up 84% of Earth's volume, so that wouldn't be good!