Problem: Write a question you would see in a school textbook.

Answer: Researchers are developing new types of crop plants with desirable characteristics such as disease resistance and drought tolerance. Crossing plants so that the next generation will express desirable traits is best described as

Problem: Write a question you would see in a school textbook.

Answer: The crude oil extracted today was formed millions of years ago from the fossilized remains of algae and other tiny marine organisms. Most parts of the organisms decomposed soon after they died. Which biomolecules decomposed more slowly and became the basis of crude oil?

Problem: Write a question you would see in a school textbook.

Answer:
During its lifetime, which object is known to change in brightness, color, and temperature?