Problem: In a greenhouse, a botanist has just finished planting two of the same kind of plant. Plant A was placed in a pot of standard soil, and plant B was planted in some serpentine soil. The botanist is planning on taking care of both plants equally so he can see which type of soil is better for growing a plant. Does plant B's soil have more or less heavy metals than plant A's soil?

A: more
Problem: Given the question: Two sister cities had different environments. Shanghai had big problems with air pollution while Berna took very good care of the surrounding environment and air quality. Which city had people at decreased risk of dying from other diseases?
++++++++++++++++++++++++++++++++
The answer is:
Berna
input question: David was studying the processes involved in a machine. He collected a simple machine. He tagged it as case A. To compare it with compound machines, he collected two compound machines, case B and case C. Case B is a compound machine with few simple machines. And, case C is a compound machine with many simple machines. Which machine would change the force applied to it more, case B or case C????
output answer: case C
Two brothers went to the doctor for their yearly examination. Liam found out he has high cholesterol, while Rudy found out his triglycerides and cholesterol are within normal parameters. Which brother was less at risk for death?
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Answer: Rudy
Q: 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 more living components of the habitat?
A: Ben
[Q]: Scientists are performing some tests on two molecules in order to try to discover how to bring dinosaurs back to life. In the first test, they increased molecule Y's speed, but they didn't do anything to molecule X's speed. They then compared the two molecules to see if they could discern anything useful. Which molecule has more kinetic energy?
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[A]:
molecule Y