Exam (elaborations)
AP Environmental Science Practice Test 1 with Answers
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AP Environmental Science Practice Test 1 with Answers 1. life has existed on earth for - Answer>> 3.8 billion years 2. water covers _ of earth - Answer>> 3/4 3. earth is well suited because - Answer>> -water covers 3/4 4. -habitable temps 5. -moderate sunlight 6. -oxygen...
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