What needs to happen for menstruation to begin?

a. Estrogen levels must rise.
b. FSH and LH levels must rise.
c. Progesterone levels must rise.
d. Progesterone levels must fall.


Ans: d. Progesterone levels must fall.

Biology & Microbiology

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Explain which noise is found and which noise is eliminated in the water hole

What will be an ideal response?

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The LEAST effective means of controlling pest species such as rats or roaches over a long period of time is generally to

A. limit food supplies B. Reduce the number of potential habitats C. Distribute pesticides throughout the habitat D. Introduce predators of the pest E. Introduce a disease which affects only the pest

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Which of the following fungal infections was extremely rare prior to the AIDS epidemic?

A) pulmonary cryptococcosis B) cutaneous candidiasis C) hypersensitivity aspergillosis D) mycetomas E) Pneumocystis pneumonia

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Which of the following settings best describes a setting in which one would be making a passive prediction?

A. Predicting the increase in labor productivity following the rollout of mandatory HR workshop. B. Predicting the change in click-through rates following the change in banner size. C. Predicting the rise in sales following an increase in the promotional activities of your firm. D. Predicting vehicle sales as a function of the daily max temperature and total rainfall.

Biology & Microbiology