Students complete nine sentences about food web changes — what happens to foxes when rabbits disappear, how removing one species affects others, and the term for a diagram showing decreasing energy levels. The matching activity pairs herbivore, carnivore, omnivore, and decomposer with their feeding descriptions.
Predicting food web changes requires students to trace indirect effects through multiple feeding relationships in the ecosystem.
Style:
Food Webs and Energy
Part A: Fill in the Blank
Write the missing word or number on each line.
1. If a disease killed all the rabbits, the foxes that eat them would have less food.
2. Removing one species from a food web can affect many other species.
3. An energy pyramid shows that producers have the most energy in an ecosystem.
4. Carnivores eat only meat.
5. A bear that eats fish and berries is classified as an omnivore.
6. Algae in a pond food web serve as producers.
7. Earthworms help decompose dead leaves and return nutrients to the soil.
8. When a predator population grows too large, its prey population shrinks.
9. The arrows in a food chain point in the direction that energy flows.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
herbivore
→ eats only plants
breaks down dead matter
carnivore
→ eats only animals
eats only plants
omnivore
→ eats both plants and animals
eats only animals
decomposer
→ breaks down dead matter
eats both plants and animals
Food Webs and Energy
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) If a disease killed all the rabbits, the foxes that eat them would have less food.
2) Removing one species from a food web can affect many other species.
3) An energy pyramid shows that producers have the most energy in an ecosystem.
4) Carnivores eat only meat.
5) A bear that eats fish and berries is classified as an omnivore.
6) Algae in a pond food web serve as producers.
7) Earthworms help decompose dead leaves and return nutrients to the soil.
8) When a predator population grows too large, its prey population shrinks.
9) The arrows in a food chain point in the direction that energy flows.
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each item to its correct answer.
herbivore
→ eats only plants
breaks down dead matter
carnivore
→ eats only animals
eats only plants
omnivore
→ eats both plants and animals
eats only animals
decomposer
→ breaks down dead matter
eats both plants and animals
Ready to Practice?
Complete each section carefully.
10 Questions
10-15 minutes
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