The best way to prevent desertification is to avoid farming in areas subject to ____
a. flooding
b. deforestation
c. acid rain
d. high winds and periodic drought
e. topsoil buildup
d
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Which of the following is NOT a reason why many species of turtles are now highly endangered?
a. Collection of young turtles for the pet trade. b. Hunting of turtles for their meat. c. Consumption of their eggs by humans. d. Consumption of their eggs by predators. e. Disease.
Increased heart rate and blood pressure and unusually heavy sweating are symptoms of
a. hyperthyroidism. b. Grave's disease. c. acromegaly. d. hypothyroidism. e. Wilson's disease.
While most additive polygenic traits show continuous distribution, some can be divided into two or more categories based on their contribution to genetic liability
Such traits are said to have what separation between affected and unaffected members of a population?
Which example describes microevolution?
A) Birds evolved from dinosaurs. B) Lions and tigers evolved from a common cat-like ancestor. C) HIV evolved resistance to antiviral medications. D) Land plants evolved from algae.