Because observation is a guess that you make and study on that certain topic.
Answer:
1.- the lithosphere, asthenosphere, and mesosphere.
2.- They both described the oceanic type.
3.- Crust, as its depth is less than 100 kilometers
4.- High pressure
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The <span>physical properties of non-metals are as below:
1) Poor conductors - generally non-metals are poor conductors of heat and electricity.
2)Low melting points - all metals have low melting and boiling points, with graphite being an exception.
3) Brittle - all nonmetals are brittle in nature.</span>
