Metagenomics offers a DNA-based method to understand
A. the history of species diversity.
B. the time hypothesis.
C. microbial diversity.
D. the organismic model of Clements.
E. the Shannon Diversity Index.
C. microbial diversity.
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The marsupials in Australia closely resemble the placental animals of the rest of the world. This is an example of
A. the fossil record. B. homology. C. convergent evolution. D. biogeography. E. development.
Today, the major danger to species is:
a. hunting by humans. b. introduction of exotic species. c. destruction of habitats. d. predator control. e. commercial harvesting.
One predicted aspect of climate change is that climates, including precipitation and temperature, over most of the Earth will become more variable. Which of the following is a good crop genetic engineering strategy if this is true?
A) Only plant crops that are genetically engineered. B) Genetically engineer most crops to withstand very long droughts. C) Genetically engineer several genotypes within single crop types. D) Genetically engineer the fastest growing crops possible.
In aquatic environments, high levels of nutrients can act as pollutants
Indicate whether the statement is true or false