question: Write a question you would see in a school textbook.
answer: What do scientists mean when they refer to a population?

question: Write a question you would see in a school textbook.
answer: Directions Read the information about wind erosion then answer the question. Wind can cause erosion that changes the surface of the Earth. Wind erosion can have negative effects on the environment by removing soil and polluting the air during dust storms. What is one way to prevent wind erosion?

question: Write a question you would see in a school textbook.
answer:
An exploratory robot was sent to the planet Mars. The gravity on Mars is weaker than the gravity on Earth. Compared to the mass and weight of the robot on Earth, the robot on Mars has