The more current, the stronger the electromagnet. Having read the above passage, choose the right answer to the following question (choices are much or little ): A strong electromagnet is receiving much or little current?
much

(Question)
Warming up exercises increases the blood flow to the muscles and increases the heart rate. Having read the above passage, choose the right answer to the following question (choices are Mary or James ): James spent 30 minutes exercising while Mary spent only 10 minutes exercising. Which person had the higher heart rate Mary or James?
(Answer)
James

Ques: Warm air is less dense than cool air, so it rises higher in the troposphere. Having read the above passage, choose the right answer to the following question (choices are less or more ): If air cools, it becomes less or more dense?
Ans: more

(Q).
We need to reduce our electricity consumption in order to reduce pollution. Having read the above passage, choose the right answer to the following question (choices are less or more ): A rapid decrease in electricity consumption could mean less or more pollution?
(A).
less

Ques:Longer wavelength electromagnetic waves have lower frequencies, and shorter wavelength waves have higher frequencies. Having read the above passage, choose the right answer to the following question (choices are higher or or lower frequencies. ): For radio transmissions, longer wavelength waves have higher or or lower frequencies.?

Ans:lower frequencies.

Greater use of oil and other fossil fuels causes more pollution. Having read the above passage, choose the right answer to the following question (choices are more or less ): If the citizens of Europe began using oil, they should have more or less pollution?
more