Please answer this: Two different rivers were stocked with adult fish. Red river had a lower fish population because the fish had hardly reproduced naturally. Black river had doubled it's fish population in two years because they reproduced naturally. Which of the two rivers had fewer fish reproduce sexually?
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Answer: Red
Problem: Two brothers liked natural sciences. Ben decided to study Ecology, while his brother Dan decided to study Geography. They studied a lot and became very good at these subjects. Which brother studied fewer ecosystems?

A: Dan
Problem: Given the question: Two people went to the eye doctor's office for an annual exam; James had farsightedness, while Bob had myopia. Which person saw fewer distant objects clearly?
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The answer is:
Bob
input question: David is a physician with the children's hospital. He is seeing four patients, patient A, patient B, patient C, and patient D. Patient A is a male with Klinefelter's syndrome. Patient B is female with Turner syndrome. Patient C is a male and does not have any of these illnesses. Patient D is a female and she too does not have any of these illnesses. Which patient would have higher level of testosterone, patient A or patient C????
output answer: patient C
Tree city and Leaf city were the two biggest cities in Boulderland. Tree city burned lots of gas and other fossil fuels, while Leaf city was very protective towards its environment. Which city caused more acid rain?
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Answer: Tree
Q: The marine biologists studied two areas of the Black Sea. Area A, situated at the mouth of the Danube River, which presented high levels of water stratification, because of the fresh water discharged by the river; and area B, situated 35 miles south, where the water was less stratified and more oxygenated. Which of the two areas was less oxygenated?
A:
Area A