Exploring the Marine Biome

What percentage of Earth's surface is covered by the marine biome?

• 80%

• 70%

• 60%

• 50%

What is the main difference between marine and freshwater biomes?

• Marine biomes are found only in oceans.

• Freshwater biomes have saltwater.

• Marine biomes include oceans, seas, and estuaries.

• Freshwater biomes are larger than marine biomes.

How does the temperature vary in the marine biome?

• It varies with depth and location.

• It is warmer near the poles.

• It is colder near the equator.

• It is the same throughout.

What role do phytoplankton play in the marine ecosystem?

• They are parasites.

• They provide food and oxygen.

• They are predators.

• They decompose waste.

Which marine plant is known for forming underwater forests?

• Seaweed

• Kelp

• Coral

• Algae

What is echolocation used for by marine animals?

• To scare away predators.

• To find food and navigate.

• To communicate with each other.

• To attract mates.

Which marine animal is known for its bioluminescent lure?

• Jellyfish

• Anglerfish

• Shark

• Dolphin

What is a significant threat to marine life due to human activity?

• Overfishing

• Plastic pollution

• Deforestation

• Air pollution

Why is it important to preserve the marine biome?

• It is a source of minerals.

• It is a tourist attraction.

• It is a source of fresh water.

• It provides food and oxygen.

What percentage of the Earth's oceans have humans explored?

• 15%

• 10%

• 5%

• 20%