Unit 3 Science Review

1. The frog lives in a wetlands ecosystem. It eats insects. What special body part does the frog have that helps it to catch flying insects?

• The frog's spots help it to catch flying insects.
• The frog's skin helps it to catch flying insects.
• The frog's sticky tongue helps it to catch flying insects.
• The frog's webbed feet help it to catch flying insects.

2. What kind of habitat do you think an animal with long, thick fur would most likely live in?

• An ocean habitat
• A land with a hot, dry climate
• A land with a hot, rainy climate
• A land with cold, snowy winters

3. What structures might monkeys have that help them to live in trees?

• Whiskers that can sense smells
• Very short arms with simple hands
• Long arms with hands that can grasp
• None of the other answer choices

4. Hot, dry weather and sandy soil describe which ecosystem?

• tundra
• desert
• grasslands
• wetlands

5. Which best describes the parts of the ecosystem?

• All the living things in an environment
• All the nonliving things in an environment
• All the living and nonliving things that interact in an environment
• All the animals in an environment and the food that they eat

6. What phrase describes all of the prairie dogs that live in the North American grasslands?

• The prairie dog habitat
• The prairie dog population
• The prairie dog ecosystem
• The prairie dog environment

7. In which type of ecosystem is the ground beneath the surface frozen all year?

• desert
• prairie
• tundra
• wetland

8. Which type of ecosystem is made up of swamps and marshes?

• desert
• prairie
• deciduous forest
• wetlands

9. What is most likely to happen if most of a population of animals dies of disease?

• The food web will stop.
• The decomposers will die.
• The food web will change.
• The producers will also get the disease.

10. Which is a natural resource?

• Steel
• Water
• Plastic
• Electricity