5. which of the following accurately reflects the beliefs on earth's early history? a. scientists believe the early atmosphere lacked the oxygen necessary to support modern human life. b. scientists believe that dna may have existed before rna. c. scientists believe that microspheres nearly prevented the development of early life.
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Select all the true statements about the cosmic microwave background radiation
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Identify characteristics of energy from the sun. check all that apply. almost all of the energy on earth comes from the sun. energy from the sun is known as mechanical energy. the energy in fossil fuels originally came from the sun. plants convert the energy of sunlight into chemical energy.
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Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above
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5. which of the following accurately reflects the beliefs on earth's early history? a. scientists b...
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