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1 What is the main topic of the passage?

The amazing abilities of sea stars
✔ The feature and danger of sea stars

Sea star’s tricks to hide from their enemies
The influence of global warming on sea stars

2 Why do some sea stars live very long?

Because they have no brain
Because they don’t have eyes
Because they are immune to pollutants
✔ Because they grow arms after being cut off

3 Which of the following best fits in the blank of the passage?

it is getting easier to stay in the warming water
✔ it is getting harder to find food in the warming water

it is getting harder to provide enough food to human
it is getting more comfortable to grow in the cool water.

4 What can be inferred from the passage?

Sea stars usually move fast.
Sea stars have a short lifespan.
Sea stars have a complicated cell structure.
✔ The temperature change affects the sea stars’ lives a lot.

Visualize the Text

Complete the map with the words from the passage.

Sea Stars

They cling to ocean reefs and rocks as well as the sandy sea floor .

Features Sea stars have no brain , but they have special cells on their skin.

Amazing Sea stars have eye spots on the tips of their arms instead of eyes.
abilities
Threats Despite being injured or broken off, an entire new limb grows.

Some sea stars can live for a very long time.

A lot of pollutants run into the oceans.

Sea stars are losing their living place due to global warming .

Unit 2 Life Science 107