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Biology, 21.06.2019 21:00
Explain two reasons you think it is important for scientists to search for new ways to treat cancer
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Biology, 22.06.2019 01:30
What type of competition exsist between two species. turtles and fish
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Biology, 22.06.2019 14:30
Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.
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Biology, 22.06.2019 14:50
The ultimate purpose of respiration: a. inhale 02 and exhale co2 b. place oxygen in the lungs c. place oxygen in the blood d. deliver oxygen to every blood cell
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The brain is the main organ of the: circulatory system nervous system digestive system excretory sy...
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