TASK DEFINITION: Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.
PROBLEM: Question: What type of cell layer do flatworms have? Answer: mesoderm

SOLUTION: Flatworms have a mesoderm cell layer and simple organ systems. They also show cephalization and bilateral symmetry.

PROBLEM: Question: What two gases are the main components of air? Answer: nitrogen and oxygen

SOLUTION: A: Other examples of liquid mixtures include salt water and salad dressing. Air is a mixture of gases, mainly nitrogen and oxygen. The rock pictured in the Figure below is a solid mixture.

PROBLEM: Question: Wind power, solar power, hydropower, and geothermal power are called renewable sources of energy or what other term? Answer: alternative energy

SOLUTION:
Alternative energy sources include wind power, solar power, hydropower, and geothermal power.