Main Idea
A pond is home to frogs, turtles, fish, insects, and plants. Each living thing depends on the others. If one species disappears, the whole pond ecosystem can change. Question:
What is the main idea of this passage?
All living things in a pond depend on one another.
Passage:
Bees collect nectar from flowers. As they move from flower to flower, they spread pollen, helping plants grow.
Question:
Which sentence proves bees help plants?
Answer:
"As they move from flower to flower, they spread pollen, helping plants grow."
Passage:
A habitat is the natural home of an organism.
Question:
What does habitat mean?
Answer:
The place where an organism lives.
Passage:
Grass uses sunlight to make its own food.
Question:
What is the grass?
Answer:
Producer
Passage:
Grass → Rabbit → Fox
Question:
Who is the producer?
Answer:
Grass
Passage:
Forests provide homes for many animals. Trees give birds places to build nests, squirrels gather acorns, and insects live under tree bark. Healthy forests support many different organisms.
Question:
What is the main idea?
Answer:
Forests provide habitats that support many living things.
Passage:
A fox hunts rabbits at night. During the day, it rests in a den to stay safe.
Question:
Quote the evidence that tells when the fox hunts.
Answer:
"A fox hunts rabbits at night."
Passage:
The owl is a nocturnal animal that hunts after sunset.
Question:
What does nocturnal mean?
Answer:
Active at night.
Passage:
A rabbit eats plants every day.
Question:
What is the rabbit?
Answer:
Consumer
Passage:
Algae → Fish → Eagle
Question:
Who is the top consumer?
Answer:
Eagle
Passage:
Coral reefs cover only a small part of the ocean, but thousands of species live there. Fish, crabs, sea turtles, and colorful coral all depend on the reef for food and shelter.
Question:
Which sentence best states the main idea?
Answer:
Coral reefs support many different ocean animals.
Passage:
After a wildfire, grasses often grow before trees. Small animals return first because they find food in the new plants.
Question:
What sentence explains why small animals return first?
Answer:
"Small animals return first because they find food in the new plants."
Passage:
A drought lasted for months, causing rivers and ponds to dry up.
Question:
What does drought mean?
Answer:
A long period with very little rain.
Passage:
Mushrooms break down dead plants and animals.
Question:
What role do mushrooms have?
Answer:
Decomposer
Passage:
Sun → Grass → Grasshopper → Frog
Question:
Where does the energy begin?
Answer:
The Sun
Passage:
When pollution enters a river, fish may die, plants may stop growing, and animals that drink the water may become sick. One problem can affect an entire ecosystem.
Question:
What is the author's main point?
Answer:
Pollution affects many parts of an ecosystem.
Passage:
Many birds migrate south each fall. They leave because food becomes harder to find during colder months.
Question:
Which sentence explains why birds migrate?
Answer:
"They leave because food becomes harder to find during colder months."
Passage:
The ecosystem remained balanced because each species had enough food and space.
Question:
What does balanced mean in this passage?
Answer:
Working together in a healthy, stable way.
Passage:
A hawk eats snakes, and snakes eat mice.
Question:
Is the hawk a producer, consumer, or decomposer?
Answer:
Consumer
Passage:
Plants → Mouse → Snake → Hawk
Question:
Which animal eats the mouse?
Answer:
Snake
Passage:
Scientists study ecosystems because everything is connected. Changes in weather, animals, plants, or people can affect the balance of nature.
Question:
What is the central idea?
Answer:
Ecosystems stay healthy when their parts remain balanced.
Passage:
When wolves returned to Yellowstone, deer moved to different areas. This allowed young trees and plants to grow again.
Question:
Quote the evidence showing wolves affected plants.
Answer:
"This allowed young trees and plants to grow again."
Passage:
The population of deer increased rapidly because there were few predators.
Question:
What does population mean?
Answer:
All members of one species living in the same area.
Passage:
Earthworms help break down leaves into nutrients that return to the soil.
Question:
What role do earthworms play?
Answer:
Decomposer
Passage:
If all the rabbits disappeared from this food chain:
Grass → Rabbit → Fox
Question:
What would most likely happen?
Answer:
The fox population would decrease because it would lose a food source.