Answer:
Explanation:
- carbohydrates.
- lipids.
- proteins.
- nucleic acids
<em>thsese are the for macromolecules,given above</em>
Answer:
I think it's replacement because the B and D just swap places in the end equation
The early atmosphere was probably mostly carbon dioxide, with little or no oxygen. <span>The proportion of oxygen went up because of </span>photosynthesis. The photosynthesis was conducted from <span>tiny organisms.
</span><span>cyanobacteria, or blue-green algae. </span><span>
They </span>used sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen. This change to the atmosphere was very important because the <span>breathable air we enjoy today was created.</span>
