Understanding Food Chains and Their Impact

Why isn't the ocean overrun with sharks despite them being top predators?

• Sharks are not the top predators.

• Sharks are herbivores.

• Energy transfer in food chains limits their population.

• Sharks have a short lifespan.

What is the primary role of producers in an ecosystem?

• To consume other organisms.

• To decompose organic matter.

• To produce their own food using sunlight.

• To hunt for food.

Which of the following is an example of a decomposer?

• Shark

• Sea urchin

• Shrimp

• Seal

In a food chain, why is only about 10% of energy transferred to the next level?

• Energy is used for growth, work, and heat production.

• Energy is completely lost at each level.

• Energy is not needed by consumers.

• Energy is stored indefinitely.

What shape does the energy distribution in a food chain resemble?

• A line

• A square

• A pyramid

• A circle

How does a food web differ from a food chain?

• A food web only includes producers.

• A food web is a combination of multiple food chains.

• A food web is a single linear path.

• A food web is less complex than a food chain.

What is one major impact humans have had on ocean food webs?

• Destroying shark populations.

• Increasing shark populations.

• Eliminating all decomposers.

• Decreasing the number of producers.

Why are sharks important in maintaining the balance of ocean ecosystems?

• They are the only consumers.

• They decompose organic matter.

• They keep the populations of other animals in check.

• They produce their own food.

What is one action you can take to help protect shark populations?

• Avoid buying fish caught with bycatch.

• Eat more shark fin soup.

• Release more seals into the ocean.

• Hunt sharks for sport.

In what way are humans considered top consumers?

• Humans are decomposers.

• Humans consume a wide variety of organisms.

• Humans produce their own food.

• Humans do not impact food chains.