All organisms have the same resource requirements
a. True, the same resources are required for all life.
b. False, although similar resources may be required, the amount of each resource can vary
among species
B
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The carrying capacity of an environment is
increased by
a. pollution. b. predation. c. disease. d. population growth. e. none of these
In the central nervous system messages are coordinated and integrated and instructions are sent via nerves to ______.
Fill in the blank(s) with the appropriate word(s).
A stationary population pyramid:
b. reflects data for only one sex as opposed to both. c. has the shape of an inverted pyramid. d. reflects unchanging birth and death rate patterns. e. is a common shape for developing countries.
Which of the following best describes IgM antibodies?
A) They cause basophils and eosinophils to degranulate. B) They are the most common type of antibody in the blood during the initial phases of an immune response. C) They are the antibody class found in body secretions. D) They interact with phagocytes and NK cells. E) They can cross the placenta to provide passive immunity.