Which phrases describe igneous rocks that cool quickly during formation? check all that apply. -small crystals -coarse surfaces -formed from lava -found on earth’s surface -exposed after erosion occurs

The correct answers are

a) small crystals

b) formed from lava

c) found on Earth’s surface

The lava that cools quickly says on the earth's surface and its crystals are also small.

Since crystals are small it cannot be a coarse surface.

Intrusive rocks get exposed by erosion as they are deposited beneath the earths surface. While quickly cooling lava is exposed to earth as it stays at the earths surface.

d. new methods of assembly are introduced.

explanation:

this allows for the goods to be made on a larger scale. not faster because now it is shown to be made better, hence the greater productivity in the question. it is calling for something new to be introduced.