A doctor tested two people for HIV. Tom had the virus in his blood, while Nick didn't have HIV, he was healthy. Tom has apparently had the virus for 20 years. Which person didn't have the ability of the immune system to defend the body decreasing?
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Answer: Nick

David wants to categorize animals according to the sound waves they can hear. Eventually, he was able to categorize them in three different groups, group A, group B, and group C. He placed the animals that can only hear ifrasound in group A. Then he placed the animals that are only able to hear the same frequency of sound waves as humans do in group B. The last group of animals were able to hear only ultrasound. He placed them in group C. Would group B able to hear higher or lower frequency than group A?
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Answer: higher

Ronaldo and Jeff are two college roommates that have similar body structure and similar physical activity levels. Ronaldo is a nutrition enthusiast and eats a diet with appropriately low amounts of fat and cholesterol. Jeff, on the other hand, doesn't really care about nutrition at all. He eats whatever he wants, whenever he wants, and as a result he consumes a diet with an inappropriately high amount of fat and cholesterol. Who is more likely to be at risk for cardiovascular disease?
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Answer:
Jeff