IL How may each of the Earth's four spheres (hydrosphere, atmosphere, geosphere, and biosphere) have caused the event to
occur?

is this for the e2020 class

the correct answer in apex is tissue development, i know because i just had this question

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101