Chapter 31 - 1-4, 6, 11-14, 19, 22, 29, 30-31
1) c 2) b 3) b 4)c
6) a
11) It must shed as the animal grows larger.
12) Heat caused their extinction
13) Temperature, loss of food, etc
14) It can keep them cool or warm.
19) fish
22) feathers
29) The warmer island - reptiles need warmth in order to keep up their body temperature.
30) They can stand in water w/o drowning
31) bird
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