Why is it a good idea to have a carbon monoxide detector in the home?
to keep parents and children from suffocating
to avoid poisoning by a buildup of co gas
to warn members of the household of smoke from a fire
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Maintaining a healthy weight allows the respiratory system to work more effectively because a. oxygen is being delivered more adequately. b. the heart does not have to pump as forcefully. c. the capillaries are constricted. d. the lung capacity allows for small amounts of air.

When lifting, where should you bend?

True or false mucous membranes destroy pathogens on the outer body surface, at body openings.