Which one of the following types of training involves 10 to 30 minutes of high-intensity exercise?
a. anaerobic
b. interval
c. medium range
d. long, steady distance

When a neutrally charged atom loses an electron to another atom, the result is the creation of a. two charged atoms. b. two negatively charged atoms. c. two positively charged atoms. d. two neutrally charged atoms.

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o