Which of the following areas is still seeing an increase in deforestation?
A. United States
B. Europe
C. China
D. Brazil
E. Canada
Answer: D
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The zoo decides to keep all of Gus and Ida's descendants under zoo conditions for the next 30,000 years. They breed only with each other. You visit the zoo in 30,000 years and see their offspring
Do you expect their offspring, which are alive in 30,000 years, to be identical in genotype and phenotype to Gus and Ida? Keep in mind, polar bears start reproducing when they are between 5 and 10 years old, and adult females give birth to two cubs every 2-3 years. A. Yes, because evolution only occurs in nature. B. Yes, because they had a small population to begin with (only two bears), so there was little genetic variation to start. C. No, because mutation would occur occasionally and there are selective pressures that exist in artificial as well as natural environments. D. Maybeâ€"it depends on mutation rates and strength of selective pressures.
Stretched out, an adult's gastrointestinal tract would be
a. 10?15 feet. b. 15?20 feet. c. 21?30 feet. d. 30?35 feet. e. 5?10 feet.
Does it make a difference which peak of the predator population you choose to examine?
a. yes b. no
When hydrogen ions (protons) are pumped across the inner mitochondrial membrane, they form a
proton gradient. ATP is then formed by a process known as: a. glycolysis. b. the citric acid cycle. c. chemiosmosis. d. pyruvate synthesis. e. substrate-level phosphorylation.