Invasion of the Jellyfish

Scientists worry because the jellyfish in our oceans...

• are small.

• have tentacles.

• multiply quickly.

• like humans.

In the sentence "Jellyfish also do their part to kill off their competition," competition means the same as ___.

• friends

• rivals

• species

• neighbors

In the section "jellies, Jellies Everywhere," what most concerns scientists about jellyfish?

• their dangerous attacks

• their short tentacles

• their increasing numbers

• their small size

What does venom mean in the phrase "its venom can stop a human heart in three minutes"?

• fat

• poison

• protein

• size

What is one reason that jellyfish are taking over the oceans?

• They are tougher than other fish.

• They have few natural enemies.

• They don't eat every day.

• They swim very quickly.

Which line from the article best supports your answer to why jellyfish are taking over the ocean?

• "They feed on the eggs of other fish."

• "Many species don't even swim--they just drift."

• "Jellies can even live in polluted waters where other fish can't."

• "In fact, some jellies have more babies in warm water."

What is one thing humans do that helps jellyfish survive?

• leave food for jellyfish

• dump medicine in the ocean

• catch the fish that eat jellyfish

• clean up the ocean

Which line from the article supports your answer for what humans are doing to help jellyfish survive?

• "But humans are catching and eating more tuna and swordfish."

• "They also eat up the food that other species need..."

• "Jellyfish are hard to kill..."

• "Jellies can even live in polluted waters..."

Based on "Jellyfish for Dinner?," people can reduce the number of jellyfish by...

• poisoning them.

• destroying them.

• catching them.

• eating them.

Which of the following is a main idea of both articles?

• Jellyfish are good to eat.

• There are too many jellyfish in our oceans.

• Jellyfish eat a lot of food every day.

• Jellyfish live in the Mediterranean Sea.