Western Europe lost most of its forests by the 13th century due to
A) the Bubonic Plague.
B) war.
C) agricultural expansion.
D) urbanization.
Answer: C
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Older people are at increased risk for heat-related illnesses because:
A) they are more likely to have chronic medical conditions that interfere with normal heat regulation. B) they have proportionately higher metabolic heat production when compared to younger adults. C) they are often taking beta adrenergic agonists, which can lessen a tachycardic response to heat. D) they acclimatize more rapidly than younger adults, which results in faster heat production.
Geological resources sustain life, and the most fundamental of these resources are ________.
A. gold and silver B. oil and gas C. soil and water D. geothermal and hydrothermal E. All are fundamental resources.
Which of the following is a method of grassland restoration?
A. removal of riparian areas and water holes from grasslands B. removal of salt blocks for cattle C. eliminating herbicide use allowing all plants to grow D. rotational grazing E. removal of native grasses to reduce growth
Which type of RNA performs a protective function in many organisms?
A) tRNA B) rRNA C) siRNA D) snRNA