Answer:
Explanation:
Most limestones actually start as calcium carbonate mud or shells precipitated by organisms in reefs or shallow shelf regions - the biosphere. Over time, the limestone is broken down into its chemical parts and may come back to the surface as volcanic CO2 (in the atmosphere).
Answer:
They get different genes from each parent.
Explanation:
Light. That's the chemical equation for photosynthesis
For the last question it's either C or D.
A structure formed from molecules that combine to make up cells is called an atom.
