_______ is the first sign of dehydration.

Choosing footwear that ______ is extremely important.

Allergies are ____ of the immune system.

Pay attention to the RDA, or ______, for all vitamin and mineral supplements.

The key to avoiding musculoskeletal disorders is _____.

_____ include safety information about products complied by the manufacturer and required by law.

A product with a pH of 8.9 is considered to be _____.

Only products that contain ____ can have a pH.

A(n)____ agent is a substance that adds to a chemical compound or subtracts oxygen from the compound.

The tail of a surfactant molecule is _____ , meaning oil loving.