Wind is becoming more common as a source of energy. Wind farms require large open spaces for the wind turbines. A negative consequence of this technology is wind turbines OPTIONS:
- are an inexpensive source of energy.
- cause little pollution to the environment.
- may hurt the flying animals in the area.
- are a renewable source of energy.
A: may hurt the flying animals in the area.

You need to move products across the ocean from Boston to Europe. What are your choices? OPTIONS:
- ship or airplane
- truck or ship
- truck or airplane
- tunnel or ship
A: ship or airplane

All animals need food to survive. Immediately after an animal eats food, the food is OPTIONS:
- stored for later use
- converted into waste
- transported by the bloodstream
- digested into simpler substances
A: digested into simpler substances

What MAJOR advantage does nekton have over plankton in locating food? OPTIONS:
- Nekton can actively swim.
- Nekton can see in the dark.
- Nekton do not eat much food.
- Nekton can eat anything in the ocean.
A:
Nekton can actively swim.