Q: Which two systems of the body are interacting when a runner sprains his ankle?

OPTIONS:
- the nervous system and the digestive system
- the digestive system and the circulatory system
- the respiratory system and the nervous system
- the muscular system and the nervous system
A: the muscular system and the nervous system
Q: Evaporation, condensation, and precipitation are all processes which occur in the

OPTIONS:
- water cycle.
- energy cycle.
- carbon cycle.
- nitrogen cycle.
A: water cycle.
Q: In the solar system, moons orbit planets. Which of these do planets orbit?

OPTIONS:
- the Sun
- Halley's comet
- the asteroid belt
- a black hole
A: the Sun
Q: A meeting of scientists, called a symposium, occurs every year to share recent research about the atmosphere of Earth. This symposium mainly serves which purpose in science?

OPTIONS:
- to test research methods used by other scientists
- to develop questions about space research
- to discuss the meaning of new discoveries
- to explain gas properties to the general public
A:
to discuss the meaning of new discoveries