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Biology, 21.06.2019 22:40
Environmental differences within ecosystems are generally caused by
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Biology, 21.06.2019 23:00
Which of the following is not a defining characteristic of plants?
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Biology, 22.06.2019 04:00
What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.
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Biology, 22.06.2019 08:30
Which of the follow describes a disadvantage secondary sources have compared to primary sources?
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An element is determined by the number of?...
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