Since the beginning of the twentieth century, the rate at which CO2, CH4, and nitrogen oxides have been released into the atmosphere has outpaced the rate at which they can be recycled. Thus these ________ ________ are accumulating in Earth's atmosphere and are correlated with an increase in the global annual-mean surface air temperature.
What will be an ideal response?
greenhouse gases
green house gases
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Functional differences can be observed by using 16S rRNA gene phylogenetics of a microbial community
Indicate whether the statement is true or false.
Which of the following structures would be the best choice as a biological indicator to test autoclave operations?
A. Endopores formed by Geobacillus (Bacillus) stearothermophilus B. Cysts formed by Azotobacter species C. Microcysts withing the fruiting bodies of myxobacteria D. Dormant spores in the conidia of Streptomyces species
Negative-feedback allows the body to return to what?
a. homeoregulation b. core body temperature c. homeostasis d. stasis
Which of the following events is (are) related to the
origin of our solar system? a. explosions of dying stars b. formation of a dense cloud of dust and gas c. cooling of cosmic matter d. coalescing of cosmic matter influenced by gravity e. all of these