Question: - Sunlight strikes the chlorophyll molecules in the plant - Is trapped - Plant also takes in water and carbon dioxide from the environment - The plant forms glucose What might be the last step of the process?
Answer: The plant releases oxygen into the atmosphere.

Question: - Dead organic material accumulates on the bottom of oceans, riverbeds or swamps, mixing with mud and sand - Over time, more sediment piles on top - The resulting heat and pressure transforms the organic layer into a dark and waxy substance known as kerogen - Left alone, the kerogen molecules eventually crack - The molecules break up into shorter and lighter molecules composed almost solely of carbon and hydrogen atoms What might be the last step of the process?
Answer: It will turn into either petroleum or natural gas

Question: - Magma comes up to the surface of the earth - The magma cools - Particles inside the magma move closer together - Crystals are formed What might be the last step of the process?
Answer:
The crystals contain minerals.