Which of the following was a direct result of the development of agriculture?
1.Decreased limiting factors such as disease
2.Expanded geographic range
3.Increased carrying capacity
4.Increased population growth rate
3
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In natural communities, some feedback mechanisms operate whenever populations change in size. They are
1.density-dependent factors. 2.density-independent factors. 3.always within the individuals of the community. 4.always outside the individuals of the community. 5.none of the choices
What is a potential danger of corridor habitat?
A) increased connectivity B) decreased colonization rates C) increased extinction risk D) increased predation risk
A post-menopausal woman who uses IVF to become pregnant must use eggs donated by another
younger woman. Indicate whether the statement is true or false.
Why are double-blind experiments used?
A) The results will be more biased. B) The results will be more controlled. C) The results will be more objective. D) The results will be more statistically significant.