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Biology, 25.04.2021 01:00 whitneyb13
PLEASE ANSWER WITH CLEAR AND CORRECT EXPLANATION!!
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DUE: IN 35 MINUTES
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Biology, 22.06.2019 12:30
Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled
Answers: 1
Biology, 22.06.2019 13:10
Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.
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Biology, 22.06.2019 18:00
Define adaptation. why do organisms adapt? give an example.
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Biology, 22.06.2019 20:30
An infection of the pulp and the surrounding tissue in the mouth is called
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