The size of a population depends on its rates of births, deaths, __________, and __________. Fill in the blank(s) with the appropriate word(s)


ANSWER: emigration; immigration

Biology & Microbiology

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HBV is mainly spread by

A. blood. B. blood products. C. semen. D. saliva. E. blood, blood products AND semen.

Biology & Microbiology

Flowers:

a. Are structures of plants that are only ornamental and have no reproductive value in plants b. Produce both pollen and egg cells c. Produce pollen only d. Produce egg cells only e. Are produced by both gymnosperms and angiosperms

Biology & Microbiology

Describe one way that a protist can make you sick. In your answer, name and describe at least two specific prokaryotic structures involved in pathogensis

What will be an ideal response?

Biology & Microbiology

Which of the following is NOT an advantage of using the diaphragm?

A) It maintains high user effectiveness even without added spermicide. B) It is relatively safe and ensures considerable spontaneity in making love. C) It is relatively inexpensive. D) It has limited side effects.

Biology & Microbiology