Relaxation of the ________ releases urine from the body
Fill in the blank(s) with correct word
external urethral sphincter
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A rubber band that is pulled taut and a person who is standing at a bus stop are examples of which of the following?
a. Potential energy b. Activation energy c. Kinetic energy d. Free energy
Allopatric speciation
1.occurs when two populations exist in the same place. 2.occurs when two populations become separated geographically. 3.occurs only in plants. 4.is not very common. 5.never happens in animals.
Bats in Cameroon, tropical West Africa, play a greater diversity of ecological roles than do bats in Ontario, Canada. Fish in the mouth of a Mexican river system play a greater diversity of ecological roles than do fish in the headwaters of the same river system. Both of these observations are supportive of which of the following hypotheses?
A) Species diversity is positively correlated with niche diversity. B) Species diversity is negatively correlated with niche diversity. C) Species diversity shows no direct relationship with niche diversity.
Direct flaming is one of the simplest methods of
A. pasteurization. B. dry heat sterilization. C. moist heat sterilization. D. desiccation.