What is the importance of the carbon and nitrogen cycles to ecosystems? they are needed to release the energy stored in food. they provide materials organisms need to build their bodies. they ensure that matter only moves within a nonliving environment. they supply the energy needed for living processes.
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Biology, 21.06.2019 20:00, zaratayyibah
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
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Biology, 22.06.2019 05:30, naomi12360
Why do oceanic plates tend to subduction when colliding with a continental plate
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Biology, 22.06.2019 12:00, luv4appleallday
The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods. c. it shows that these organisms share the same habitat. d. it provides evidence that these organisms suffered a genetic mutation.
Answers: 1
Biology, 22.06.2019 14:20, strevino9178
When a population split into two subgroups what is most likely to cause the subgroups to develop different traits?
Answers: 1
What is the importance of the carbon and nitrogen cycles to ecosystems? they are needed to release...
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