Aliens from Earth

Why does kudzu grow more quickly in the southeastern states than in Japan?

• Kudzu grows better in forests.

• There is more sunlight in the southeastern states.

• The warm, humid climate makes the plant grow quickly.

• Kudzu has more room to grow in the southeastern states.

Why did the rabbit population explore in Australia?

• There was a law that no one could kill rabbits.

• They had no natural predators.

• The Europeans brought over too many rabbits.

• They had plenty of food.

How did zebra mussels invade the United States?

• They came from Europe on buoys.

• They came from Europe in ballast tanks.

• Birds brought them over.

• Scientists thought they would help local fisherman.