The component of the Earth's atmosphere of many gasses, is decreases due to the process of photosynthesis, would be the carbon dioxide component, CO2 gas, as plants and other primary producers, utilize this gas, a product for which is breathed out in plants and animals, to incorporate into the second step of photosynthesis. Ultimately to make sugars, glucose.
Answer:
Blood carries carbon dioxide back to our heart and lungs, oxygen back to heart and out to the body
Explanation:
Because as natural selection occurs and species mate and create offspring this leads to a change in DNA which can lead to new species or evolutionists versions of that species
I think it might be Stratosphere, if Ozone layer is an option I will suggest that too.
Answer:
cleatcutting of all trees near the town
