Biology, 29.07.2019 13:50 alyssanewsome
How do the lymph and immune systems depend on the cardiovascular system? a. the cardiovascular system pumps lymph fluid through blood vessels. b. nerve impulses from the brain are carried to the lymph nodes by blood. c. white blood cells from the lymph and immune systems travel through blood vessels. d. the lymph and immune systems do not interact with the cardiovascular system.
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Biology, 21.06.2019 14:00
What adaptation is apparent in the bodies of the three tortoise species shown in figure 16-2
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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, 22.06.2019 02:30
What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.
Answers: 1
How do the lymph and immune systems depend on the cardiovascular system? a. the cardiovascular syst...
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Mathematics, 21.07.2019 16:40
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