Q: Which of these is most likely caused by the action of water, wind, and animals?

OPTIONS:
- mountains
- erosion
- earthquakes
- volcanic eruptions
A: erosion
Q: What advantage do sea stars gain from having radial symmetry?

OPTIONS:
- They reproduce at a faster rate.
- They digest food more efficiently.
- They move quickly along the ground.
- They sense predators and potential food from all directions.
A: They sense predators and potential food from all directions.
Q: When a soccer player kicks a ball, which two systems work directly with the muscular system?

OPTIONS:
- immune and excretory
- digestive and respiratory
- nervous and skeletal
- circulatory and integumentary
A: nervous and skeletal
Q: Which object used in an experiment can safely be recycled?

OPTIONS:
- an aluminum can
- a wet paper towel
- salt spilled onto a tabletop
- a broken graduated cylinder
A:
an aluminum can