Which of the following factors can affect carrying capacity?
A. Population size
B. Human activity
C. Growth rate
D. Natural selection
E. Generation time
Answer: B
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The Cretaceous is the period in which
a. mammals diversified and flourished. b. life appeared on this planet. c. the first animals with shells and skeletons appeared. d. the dinosaurs reached their peak and then became extinct. e. the first human-like apes appeared.
A Pap test checks for cancer of the
A. ovary. B. oviduct. C. vagina. D. uterus. E. cervix.
Since sons adopted by alcoholic men show a rate of alcoholism more like that of their biological
father, there is an argument for the role of genetic factors in this disease. Indicate whether the statement is true or false.
The temperature-regulating center of vertebrate animals is located in the _____
A) thyroid gland B) hypothalamus C) subcutaneous layer of the skin D) liver