Page 42 - Science Course 3 (Book 1)

Mo1-L4: Vocabulary Review

Direction: In the puzzle below, each number will correspond to one letter of the alphabet.
For example, 1 = I. Shaded letters will not be used. Crack the code by using the clues for hints.
After you read the clues and fill in the blanks, complete the chart with the number that
corresponds to each letter you have used.

1. process by which one community gradually changes into another

I
20 25 4 15 4 10 1 25 16 15

I
19 5 25 25 20 19 19 1 4 17

2. stable community that does not go through major ecological changes

I
25 15 1 18 16 8

I
25 4 18 18 5 17 1 22 11

3. the first species that colonize new or undisturbed land

I I
14 1 4 17 20 20 26 19 14 20 25 1 20 19

4. process through which a body of water becomes nutrient-rich

I I
20 5 22 26 4 14 9 1 25 16 22 1 4 17

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