A zebra herd lives in a prairie grassland habitat. How does the zebra get food in this habitat?

• A. The zebra hunts tigers

• B. The zebra digs holes to find worms.

• C. The zebra eats different kinds of grasses.

• D. The zebra hunts other zebras.

Animals give off carbon dioxide that plants take in through leaves. What do plants give off as a result of photosynthesis that animals need to breathe?

• A. Heat

• B. Oxygen

• C. Protein

• D. Water

Mia digs a small hole in her garden. She uses a hand lens to observe closely the soil that was dug out.

Which scientific question best matches Mia's actions in her garden?

• Does the soil contain nutrients?

• Why does soil support growth of plants?

• What types of life forms live in the soil?

• How does soil differ from one place to another?

In a forest ecosystem a hawk is a predator, and its prey is a mouse. What will most likely happen if the number of hawks declines?

• The number of mice will barely decrease.

• The number of mice will greatly decrease.

• The number of mice will stay the same.

• The number of mice will increase.

What is the role of the foxes in the food web?

• consumers

• decomposers

• herbivores

• producers

Which statement correctly describes an energy transfer within this food web?

• The owl transfers energy to the snake.

• The grasshopper transfers energy to the rabbit.

• The fox receives some energy from the berry bush.

• The berry bush receives some energy from the grasshopper.

Which organism would best fit in the X in the diagram?

• tree

• Sun

• mushroom

• butterfly

Which statement is true about ocean ecosystems?

• Oceans are large bodies of freshwater.

• The temperature of ocean water usually stays the same from the top to the bottom.

• Oceans are small bodies of water surrounded by land.

• Most organisms in an ocean live closer to the surface or where the water is shallow.

Which organism receives energy directly from the Sun?

• aphid

• blue jay

• falcon

• flower

Which organisms are carnivores?

• Cougar and Prairie Dog

• Cougar and Fox

• Fox and Prairie Dog

• Fox and Grass