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I. Answer the following questions.
1） How are native and invasive plants different?
2） What are some animals that are flightless
3） If something happens gradually, does it happen slowly or quickly?
4） Where is the canopy of the forest?
5） How is a meadow different from a forest?
II. Fill in the blanks with words from lessons 6—9.
1） There are no plants left. That kind of plant is e _ _ _ _ _ _.
2） Many trees were cut down in that forest. It was l _ _ _ _ _.
3） Some animals must s _ _ _ _ _ _ _ to survive. It is very difficult
4） There are many trees close together in that forest. It is very d _ _ _ _.
5） Part of the soil is made from animal w _ _ _ _.
III. What's the word? Using the clues, write the correct word from lessons 6—9.
1） These things are very good for our bodies: n _ _ _ _ _ _ _ _
2） We use this word if something was stopped: p _ _ _ _ _ _ _ _
3） These are very small pieces: p _ _ _ _ _ _ _ _
4） This is what pulls things back to Earth: g _ _ _ _ _ _
5） Plants do this after they die: d _ _ _ _ _ _ _ _
IV. Draw a picture of a flightless animal. What is it
This is a flightless animal. It is a __________