What primary impact do volcanoes have on greenhouse gases?
a. volcanoes calls increase in carbon dioxide levels in earths atmosphere
b. volcanoes cause increases in nitrous oxide levels in earths atmosphere
c. volcanoes calls increases in halo carbon levels in earths atmosphere
d. volcanoes cause increases in methane gas levels in earths atmosphere

The answer is; Carbon dioxide levels in the Earth’s atmosphere have been steadily increasing.

Data has shown a direct relationship between the increase in the levels of carbon dioxide in the atmosphere and rising global temperatures. The rise in the global temperatures can be observed through the melting of Arctic and Antarctic glaciers, the rise in ocean levels, and extreme weather events.  

The answer is A Volcanoes calls increase in carbon dioxide levels in earths atmosphere

answer: tributaries flow into rivers.

wetland is a biome that develops when the water gets accumulated in a land exhibiting a huge depression. these form either seasonally or permanently. the water in the wetland comes from rivers, lakes, ocean, flood, rain or other sources. the wetlands includes mangroves, marshes and peatland.

tributaries flow into the rivers develops a wetland because such water will get deposited in the depression and will restrict the original flow of tributary water. hence, water with low drainage current combines with the river water.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.