Suppose you have friends who scoff at the idea of participating in a conservation group in your community. How would you convince them that protecting biodiversity directly benefits everyone, including them?
What will be an ideal response?
Why should we protect biodiversity? From a selfish standpoint, doing so is an investment in our future. Healthy ecosystems are essential to the survival of our species. Other organisms produce the oxygen we breathe and the food we eat. They remove waste carbon dioxide from the air and decompose and detoxify wastes. Plants take up rain and hold soil in place, preventing erosion and reducing the risk of flooding. We are still discovering medically valuable compounds produced by wild species. Wild relatives of crop plants are reservoirs of genetic diversity that plant breeders draw on to protect and improve crops. These are all reasons why protection of biodiversity benefit humans.
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The ____________ of a comet can be up to a million kilometers in diameter
Fill in the blank(s) with correct word
You have taken E. coli strain A which has its own plasmids, and mixed it with E. coli B strain without plasmids. E. coli B cells now have plasmids but, in addition, they also carry some genes from E. coli A strain. What has happened is
A. the cells of E. coli A were Hfr cells. B. vertical transmission of DNA has occurred. C. the E. coli B cells have become mutants of the original culture. D. an example of transformation.
Fossils found in the lowest geological strata are
generally the most a. advanced. b. complex. c. primitive. d. widespread. e. specialized.
Microbes such as Geobacter metallireducens obtain energy from organic matter under anaerobic conditions by using MnO2 as a/an ________ ________.
Fill in the blank(s) with the appropriate word(s).