The fourth type of cultural diffusion. similar to expansive diffusion except that it involes a rapid and invasive diffusion of trait through the culture group. it is termed contagious disease is spread.
Answer:
Explanation:
The diagonal of a square is x units.
Let the side of a square is s.
Using pythagoras,
The area of the square is,
A = s²
So,
So, the area of a square is 
sq units.
Answer:
C. the movement of the Earth's plates
Explanation:
The plates can be thought of like pieces of a cracked shell that rest on the hot, molten rock of Earth's mantle and fit snugly against one another. The heat from radioactive processes within the planet's interior causes the plates to move, sometimes toward and sometimes away from each other.This movement is called plate motion, or tectonic shift. (National ocean service)
