Biology, 28.06.2019 09:30 tatirocks1870

What causes the formation of trenches in earth’s crust?

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Biology, 22.06.2019 12:50, xxbriannahollandxx

Aresearcher created three groups based on participants bmi: normal weight, overweight and obese. the hypothesis being tested is that the three groups differ in the mean number of artificially sweetened drinks consumed weekly. which statistical test might the researcher use, assuming a reasonably normal distribution of values.

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Biology, 22.06.2019 15:00, Gunn2368

Which of the following must be true for a fossil organism to be useful as an index fossil? a. the fossil organism must be widespread geographically. b. the fossil organism must be abundant. c. the fossil organism must be limited to a short span of geologic time. d. all of the above.

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Biology, 22.06.2019 15:40, weeblordd

The cell membrane controls what enters and leaves the cell. which of the structures in the diagram below is the cell membrane? — f о