Which of the spheres interact in the formation of coal? Check all that apply.
atmosphere
biosphere
cryosphere
geosphere
hydrosphere

It's the biosphere and geosphere.

Explanation:

This is the paragraph that came along with it:

"Coal is a black, hard substance formed from the remains of living things that existed a long time ago. The remains were buried and exposed to pressure and temperature underneath Earth’s surface. Over time, these remains solidified."

To show that it's the biosphere, it says, "substance formed the remains of living things." This means it's from the biosphere.

To show it's from the geosphere, it says, "the remains were buried and exposed to pressure and temperature underneath the Earth's surface." Geospehre is the 4 states of matter underneath the Earth's surface.

TLDR: I got it right on Edge and came up with some "reasonable" explanation

question

which are human systems?

the amazon rain forest

the appalachian trail

the george washington bridge

the himalayas

the hoover dam

the north american free trade agreement