Ques: Ethologists usually study how animals behave in their natural environment, and germs are a natural part of the environment. Given these facts, ethologists usually study how animals behave around what among the following options: - Birds - germs - islands - humans - Summer - food - seasons - wetland
Ans: germs

Ques: Exercise has a positive impact on a human 's health, and sports is a good form of exercise. Given these facts, what have a positive impact on a human's health among the following options: - sweating - nutrients - tuna - animals - hormones - food - clams - sports
Ans: sports

Ques: Electrical current running through a wire causes that wire to heat up, and raw coal can be burned to produce electricity. Given these facts, what can cause a wire to heat up among the following options: - soil - ice - waves - LEDs - motors - coal - silt - copper
Ans: coal

Ques: Irradiating food can be used to kill existing microorganisms in the food, and food irradiation is blazingly high-tech. Given these facts, a blazingly high-tech method can be used to kill existing microorganisms in what among the following options: - blood - trout - caverns - stars - food - algae - radioactive material - humans
Ans:
food