Biology, 20.02.2020 08:44 martinezkimberly706
Which of the following is not true concerning the energy harnessed by humans throughout history? a. Early hominids harnessed the least energy, just that of their own bodies. b. Fire let humans increase their energy use tenfold. c. Neolithic farmers were able to harness the energy of animals. d. Modern humans use more than a hundred times the energy of early humans. Please select the best answer from the choices provided A B C D
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Biology, 21.06.2019 20:00
In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls
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Biology, 21.06.2019 20:00
Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data
Answers: 1
Biology, 21.06.2019 23:30
What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a
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Biology, 22.06.2019 11:20
Drag each label to the correct location on the chart. match the function to the type of tissue
Answers: 2
Which of the following is not true concerning the energy harnessed by humans throughout history? a....
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