The best answer would be nitrogen
It protects earths surface from dangerous radiation. Your answer is A
Because as the cranial capacity increases so does the size of the brain and throughout evolution our brains got bigger.
<span>As the size of the cranial capacity increases so does the ability to learn language and manufacture tools as the brain can increase in size therefore increasing </span>intelligence.
-Hope this helped! :D
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Answer and Explanation:1) photosynthesis can be increased by increasing the concentration of CO2. When a plant is isolated and supplied with carbon dioxide, it is shown to have increased photosynthesis.
2) The Ocean makes up 70% of the planet while the land makes up only 30%. Therefore photosynthesis occurs more in the ocean. The aquatic plants and other autotrophs like the phytoplanktons carries out majority of the photosynthesis on earth.
Three materials transported by global ocean circulation are water, nutrients that are brought to the surface of the water and oxygen that is taken from the surface and sent to the deep ocean.