PLEASE HELP! Thanks :) Which energy source has no greenhouse gas emissions but has waste products that present a health hazard for humans?
Group of answer choices

Geothermal

Coal

Nuclear

petroleum

The energy in fossil fuels is often converted into
Group of answer choices

Electrical energy

Magnetic fields

Uranium

Power plants

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous