Theoretically, based on the cohesion-tension mechanism, the maximum height for the tallest trees

should be about



a. 50 ft.
b. 130 m.
c. 6 ft.
d. 3 m.
e. 75 m.


B

Biology & Microbiology

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Different courtship displays among closely related bird species are an example of:

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Life forms exhibit both unity and diversity. Which of the following best demonstrates the unity among all organisms?

A. The three domains of life. B. Emergent properties. C. Amino acids are the building blocks of proteins. D. Natural selection.

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Population control factors that arise from outside the population are called 

A. extrinsic limiting factors. B. density-independent limiting factors. C. intrinsic limiting factors. D. density-dependent limiting factors.

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