Q: What is the primary function of skin cells?

OPTIONS:
- to deliver messages to the brain
- to generate movement of muscles
- to provide a physical barrier to the body
- to produce carbohydrates for energy
A: to provide a physical barrier to the body
Q: When a multicellular organism is damaged, it will repair itself as

OPTIONS:
- it mutates.
- the cells work together.
- the cells move.
- it makes its own food.
A: the cells work together.
Q: In which way are evaporation and condensation similar?

OPTIONS:
- Both cause decreases in air temperature.
- Both cause increases in air temperature.
- Both are caused by the warming of the atmosphere.
- Both are caused by changes in heat energy.
A: Both are caused by changes in heat energy.
Q: Which group of organisms would all be found living in a tropical rain forest?

OPTIONS:
- Lizards, insects, cacti, kangaroos
- Vines, palm trees, tree frogs, monkeys
- Evergreens, moose, weasels, mink
- Lichens, mosses, caribou, polar bears
A:
Vines, palm trees, tree frogs, monkeys