TASK DEFINITION: Given a scientific passage and an answer, generate a question for the given answer.
PROBLEM: Passage: A population is a group of individuals of the same species that live in the same area. The population is the unit of natural selection, adaptation, and microevolution. In ecology, how large a population is and how quickly it is growing are often used as measures of a species' health. Answer: population

SOLUTION: What term refers to a group of individuals of the same species that live in the same area and is the unit of natural selection, adaptation, and microevolution?

PROBLEM: Passage: Hinge Joint. The knee joint is a hinge joint. Like a door hinge, a hinge joint allows backward and forward movement. Answer: hinge joint

SOLUTION: What type of joint is the knee joint?

PROBLEM: Passage: The name carbon tetrachloride implies one carbon atom and four chlorine atoms, so the formula is CCl4. Saylor URL: http://www. saylor. org/books. Answer: chlorine

SOLUTION:
The name carbon tetrachloride implies one carbon atom and four of which other atoms?