If you lift heavy objects often, you should always wear a back belt for support.

Astructural difference between the trachea and esophagus that prevents the trachea from collapsing is the presence of: a) smooth muscle b) skeletal muscle c) respiratory cilia d) rings of cartilage

In a paragraph, write a personal physical activity plan using current safety guidelines. your plan should include an approach for assessing your own physical activity level. include supporting details in the form of facts, statistics, or examples.

Wjat are substances intentionally added to food to produce a desired effect?