Alexandra is researching the effects of plate tectonics have on the shape of the earth. Which of the following is a result of plate tectonics a. The species of grass on an island

b. Formation of mountains on land

c. Earths core temperature

d. The amount of precipitation over oceans

(Science)

b

Explanation:

the plates crash into each other and form a mountain yea that's it

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

a polar bond is formed when electrons are shared unevenly between atoms