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julia-pushkina [17]
3 years ago
9

What is silicon, oxgyen, aluminum chemical composition. A. crust B. mantle C. cores​

Biology
1 answer:
PolarNik [594]3 years ago
5 0

Answer:

A. Crust

Explanation:

The most common chemical elements in the crust are oxygen (46.6%), silicon (27.7), aluminum (8.1), iron (5.0), calcium (3.6), potassium (2.8), sodium (2.6), and magnesium (2.1). These figures vary among different studies because we really have no way to know for sure.

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<em>Davy made a model of the water cycle by adding some water inside a plastic bag, sealing the bag, and placing it in a sunny area. He noticed that the level of the water went down, and then some droplets appeared on the sides of the bag. which part of the water cycle caused water droplets to form on the side of the plastic bag?  </em>

<em>(a) condensation (b) evaporation (c) precipitation runoff</em>

The part of the water cycle that caused water droplets to form on the side of the plastic bag would be condensation.

<h3>What is condensation?</h3>

It is a process whereby water vapor in the atmosphere condenses or turns back into liquid.

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More on condensation can be found here: brainly.com/question/15563071

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