How does pollution contribute to global warming? It changes the direction of major currents.
It forms a barrier that keeps in the sun's heat.
O It makes it harder for the sun's rays to reach Earth
O It makes it more difficult for sea life to survive in the ocean.

im not in connections yet but i might can you some questions. what grade are you in?

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers