Please answer this: Woodland had two nearby fish hatcheries. Pine hatchery had great result the past few years because they found a way to reduce ammonia water toxicity. Spruce hatchery has big ammonia toxicity problems and hadn't find a way to remediate them. Which hatchery found more fish with poor growth?
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Answer: Spruce
Problem: Two students from the same class, studies different types of animals. Bill studied predators, while John studied grazers. Which student found out that predators can be keystone species?

A: Bill
Problem: Given the question: Two farms were situated on opposite banks of a large river flowing into the ocean. Hill farm practiced conventional agriculture, while Dew farm practiced permaculture design within the context of organic farming. Which farm generated fewer marine dead zones because of fertilizer and chemical use?
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The answer is:
Dew
input question: Two large islands from the same archipelago were visited by explorers. Green island was home to most species of reptiles, while Blue island was favored by numerous species of birds and hardly any reptiles. Which island was inhabited by fewer lizards????
output answer: Blue
Two boys read about the Earth, Evolutionism and the Gaia hypothesis. Brad liked Evolutionism more, while Stan preferred the Gaia theory, and agreed with it. Which boy agreed that the Earth tends to achieve homeostasis?
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Answer: Stan
Q: Sandra liked all creatures but loved to study frogs. Her sister Julie studied more about fish and butterflies. They both loved nature. Which sister heard more male frogs "ribbiting"?
A:
Sandra