Exploring the Mariana Trench

Which of the following is NOT a challenge faced by living things in the Mariana Trench?

• Extreme pressure

• Abundant sunlight

• Cold temperatures

• Total darkness

What is bioluminescence?

• The ability to glow in the dark.

• The process of breathing underwater.

• The study of deep-sea creatures.

• The crushing weight of the ocean.

How does an anglerfish use bioluminescence?

• To scare away predators.

• To attract prey.

• To communicate with other anglerfish.

• To camouflage itself in the dark.

Which of the following best describes the Mariana Trench?

• The highest mountain in the world.

• The deepest part of the ocean.

• A desert in the middle of the ocean.

• A tropical rainforest underwater.

Why is it important to study the Mariana Trench?

• To find sunken treasure.

• To learn more about the Earth's oceans.

• To build underwater cities.

• To catch more fish for food.