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What is the unlimited source of energy for the earth? a. photosynthesis b. respiration. c. the sun d. nutrient cycles
Answers: 2
Biology, 22.06.2019 10:50, guzmangisselle
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
Answers: 1
Biology, 22.06.2019 15:30, DogeDogeLove
When an object is moving away from you while still making a sound, the pitch of the sound is perceived to a. lower b. unchanged c. fluctuating d. higher
Answers: 2
Biology, 22.06.2019 19:50, dayanawhite64
Which statements explains what the fossil records indicates? check all that apply. a) earth is 4.5 billion years old b) many organisms have become extinct c) mammals have always existed on earth d) mass extinctions have occurred several times on earth e) the amount of water on earth has decreased over time?
Answers: 2
What is the unlimited source of energy for the earth? a. photosynthesis b. respiration. c. the sun...
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