Q: From Earth, the Sun appears brighter than any other star because the Sun is the
A: closest star.
Q: The Grand Canyon is an example of
A: erosion.
Q: In 1971, the bones of an extinct flying dinosaur were discovered. This kind of discovery helps everyone learn more about
A: history of animal species on Earth.
Q: Which organ system is responsible for the exchange of oxygen and carbon dioxide between the body and the environment?
A:
respiratory