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Biology, 22.06.2019 04:00
The transport tubes for food coming down the plants are called?
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Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins
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Biology, 22.06.2019 10:50
Overtime the pond slowly becomes more acidic due to the release of chemicals from a nearby factory. which of the organisms would most likely survive the change to their environment?
Answers: 1
Which of the following is NOT an important role for phytoplankton?
A. they provide food for fish an...
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