4 Select the correct answer.
What causes spoilage of food through infestation and contamination, and reduces its nutritional value?

A. bacteria
B. enzymes
C. insects
D. mold
E. yeast

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

If you are having a hard time lifting something, you should arch your back. a. true b. false

Effective community programs the individual, the community, organizations, and the government. select the sentence that shows a benefit to organizations. ryan and farah were discussing voluntary work. ryan was very keen to work on health-related issues. he knew that many districts had effective community programs. farah recently read a report about a local community program that reduce the rate of heart diseases by 30 percent. this reduced healthcare costs. local companies also saw productivity increases.