Adam was the first men of earth
Answer:
4500 years old
Explanation:
Line up 50 to the graph on the y axis and it gives a x value of 4500
The most influential factors include the parent material (the rocks from which thesoil<span> has come), the </span>climate<span> and terrain of the region, as well as the </span>type<span> of plant life and </span>vegetation<span> present, and, of course, human influence. ... These </span>soils<span> but are less leached than the tundra </span>soils<span>.</span>
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.
