Earth is composed of four main layers, starting with an inner core at the planet's center, enveloped by the outer core, mantle, and crust. The inner core is a solid sphere made of iron and nickel metals about 759 miles (1,221 kilometers) in radius.
source: nasa
Answer:
1. Losing
2.An increase
3. Faster
Explanation: I took the test and got them all correct
The mountainous regions could not develop agriculturally as much as fields
because they're different ways
