D. high and low levels of silica in the different type of lava.
Explanation:
The volcanoes have different types of explosions. Some tend to be highly explosive, some less explosive, some don't have explosions at all, while some have combinations of different eruptions. The reason for this diversity in the eruption types is mostly the composition of the magma, or rather how high is the silica content in it.
Basically, the higher the silica level in the magma the higher the explosiveness, and the lower the silica level the lower the chances of explosiveness. This is the case because the higher amount of silica makes the magma thicker, so the gasses are trapped and they explode, while when the lower silica content makes the magma less thick, so the gasses are not trapped and explosions are lacking.
Answer:
The largest amount of carbon is involved in natural fire biological processes in the oceans.
Explanation:
The exchange of carbon between the biosphere , hydrosphere , geosphere and atmosphere on the Earth , is called the Carbon Cycle.
The ocean contains a large active pool of carbon on the surface of the Earth , but in the deep ocean does not exchange with the atmosphere.
The amount of carbon from the biological process in the oceans is 50 % greater than any other.
Roughly 40% Hope this helps! :)
Answer:
Human activity is the main cause of climate change. People burn fossil fuels and convert land from forests to agriculture. ... Burning fossil fuels produces carbon dioxide, a greenhouse gas. It is called a greenhouse gas because it produces a “greenhouse effect
The answer is D, hope this helps.
