In spring, red-winged blackbird males return to their summer grounds where they compete for

territories prior to the arrival of females. This is an example of __________.



a. resource partitioning
b. intraspecific competition
c. niche overlap
d. dominance hierarchy


B

Biology & Microbiology

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The process by which a mature embryo sporophyte resumes growth is called ________

a. dormancy b. metabolism c. germination d. development

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Periodontitis is characterized by which

What will be an ideal response?

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Which of the following are magnifying lenses?

A) objectives B) oculars C) condensers D) prisms E) both objectives and the oculars

Biology & Microbiology

Choose all the characteristics that are true about "active immunity."

> It protects the body against a new infection thanks to antibodies developed by the host during the first exposure to the antigen. > It requires several days to develop. > It can last for a relatively long time, sometimes for life. > Active immunity can be stimulated only by artificial means. It protects the body against a new infection thanks to antibodies developed by the host during the first exposure to the antigen. It requires several days to develop. It can last for a relatively long time, sometimes for life.

Biology & Microbiology