The reintroduction of wolves in the year 1995 increased biodiversity in Yellowstone National Park by suppressing elk and coyote populations, allowing revegetation of stream and river banks.
a. The United States
b. Russia
c. The United Kingdom
d. Canada
a. The United States
The United States and China did not ratify the Kyoto Protocol, which likely limited the scope and impact of the agreement’s impact on the reduction of greenhouse gas emissions.
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Humans acquire the arbovirus that causes epidemic encephalitis by
A. the fecal-oral route. B. human to human contact. C. contaminated food. D. the bite of an infected mosquito
Birds that catch their prey by plunge diving into the water from the air are:
a. skimmers. b. cormorants. c. terns. d. penguins. e. avocets.
Which of the following is false about a cell undergoing mitosis with 4 chromosomes?
A. During metaphase there are 4 chromosomes B. During prophase the homologous chromosomes line up and cross-over C. During metaphase there are 4 centromeres D. During anaphase there are 8 DNA molecules
From an evolutionary perspective, behavior can be viewed best as:
a. not subject to the normal evolutionary process because it involves a neurological system. b. a trait that can satisfy the three conditions required for evolution by natural selection. c. something that is too complex to arise through natural selection. d. Both b) and c) are correct. e. All of the above are correct.