Answer:
because there might be changes in the future which could make the estimates unreliable for example war or decline in economy
Explanation:
Answer:
Plate tectonics
Plate tectonics is the scientific theory explaining the movement of the earth's crust. It is widely accepted by scientists today. Recall that both continental landmasses and the ocean floor are part of the earth's crust, and that the crust is broken into individual pieces called tectonic plates
Answer: Plants perform photosynthesis more efficiently when carbon dioxide is abundant. This in turn reduces the amount of carbon dioxide in the atmosphere and increases the amount of oxygen
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