Step 5: Answer the following questions: 3. What did the light energy do to the water?
4. Once your oxygen (O2) is created, what atoms do you have left and how many of each?

the answer is c.

by: nicholas dooley

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