Active volcanoes can affect the properties of the soil (e.g., pH) and therefore may alter agriculture and health.
<h3>What are active volcanoes?</h3>
Active volcanoes are geological formations that have regular cycles of eruptions, releasing liquid magma to the Earth's surface.
These eruptions are composed of rocks (or ash weathers) that generate fertile soils, but also may affect the respiratory airways.
Volcanic eruptions have devastating consequences for human populations and lead to destruction as well as societal collapse.
In conclusion, active volcanoes can affect the properties of the soil (e.g., pH) and therefore may alter agriculture and health.
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Answer:
78 percent
Explanation:
The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen.
D oxygen there was no free oxygen on the earth
Actually, it is both acquired and part of your DNA. There is a logical <span>explanation but you have to figure that out on your own.</span>
