The silica content affects the type of explosion in a volcano: explosive or quiet. depending on hte explosion the lava can take more time to harden. in that time the igneous rock can trap several things in the lava and those things can affect the color.
The hypothalamus sends signals to the pituary glands. The hypothalamus releases dopamine, so I think dopamine is a good answer?
It provided people with 1 of their most basic needs, a dependable supply of food
The first step the biologist needs to make an observation in which to create a hypothesis.
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I think atleast one is Oxygen because it needs air to digest
