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: Individuals with sickle cell anemia have crescent-shaped what? Answer: red blood cells

SOLUTION: Figure 39.21 Individuals with sickle cell anemia have crescent-shaped red blood cells. (credit: modification of work by Ed Uthman; scale-bar data from Matt Russell).

PROBLEM: Question: The rock of the mantle is mostly what? Answer: peridotite

SOLUTION: The rock of the mantle is mostly peridotite. Peridotite is formed of crystals of olivine (green) and pyroxene (black).

PROBLEM: Question: Science is a process of knowing about the natural universe through what two actions? Answer: observation and experimentation

SOLUTION:
Science is a process of knowing about the natural universe through observation and experiment.