In the reaction 2ca + o2 → 2cao for every 2 ca you will need how much o2? a. 1 c. 3 b. 2 d. 4

Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.