Which Rock Type Makes Up Approximately 90% of the Earth's

question 91

Multiple Choice

Which rock type makes up approximately 90% of the Earth's crust?

• A)sedimentary
• B)metamorphic
• C)igneous
• D)clastic
• E)foliated

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Definitions:

Neurons

Specialized cells in the nervous system that transmit information to other nerve cells, muscle, or gland cells.

Support Cells

Cells that provide structural, nutritional, or other types of support to the neurons in the nervous system.

Chemical Functioning

The processes and reactions by which chemicals interact and transform within a system.

Carbon

A chemical element with symbol C, known as the basic building block of life, found in all organic compounds.