discuss four contributory factors that may lead to an increase of learners abusing substance in schools​

The earth's inner core reaches temperatures that are at times greater than 9000°f. what causes this layer to remain solid despite the high temperature?

5. how is transported soil different from residual soil? o a. it forms on unconsolidated materials. ob. it develops on bedrock. o c. it has been moved from another location. d. it transports other materials.

Explain how a convection current in the earth is formed.