Two Chemical Elements Make Up 70 Percent of Earth's Crust

question 10

Essay

Two chemical elements make up 70 percent of Earth's crust by weight.What are the two elements,and what family of minerals do they form?

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Definitions:

Protective Apparel

Protective apparel refers to clothing and gear designed to safeguard individuals from physical, chemical, and biological hazards.

Gloves

Hand coverings made from various materials used to protect against environmental hazards, contamination, or to prevent disease transmission.

Hand-Hygiene

The practice of cleaning hands to remove dirt, germs, and other contaminants to prevent the spread of infections.

Hand Sanitizer

A liquid or gel typically used to decrease infectious agents on the hands, commonly alcohol-based.