The world produces 40,000,000,000 tons of carbon in the air a year. How many carbon capture factors would we need worldwide to keep the carbon levels the same?

Which of the following can refer to the form of exercises that uses free weights, weight machines. resistance bands, or the weight of the body to put stress on the muscles ? (a) strength training(b)weight training(c)resistance training(d) all the above

You should never drive a car if you are a.taking cold medication b. suffering from the flu c. drinking alcohol d. all the above

Never seek shelter from a tornado: a. in a mobile home b. in a car or truck c. in a room with windows d. in any of the above