Chlorofluorocarbons (CFCs) are pollutants because
a. biogeochemical mechanisms for their removal have not yet appeared in the biosphere.
b. they combine with water to form hydrochloric and hydrofluoric acids.
c. they are found in smog.
d. they are photochemical oxidants.
e. they combine with carbon dioxide to form acid rain.
A
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One property that distinguishes cells in Domain Eukarya from those in Domain Bacteria is the presence of
A. a cell wall. B. DNA. C. flagella. D. membrane-bounded organelles.
The major cation responsible for regulating actin-myosin contraction is
a. Ca2+. b. H+. c. K+. d. Na+.
A structural molecule found in eukaryotic cytoskeletons, flagella, cilia, and centrioles is (flagellin/tubulin/fibrin)
What will be an ideal response?
Which of the following examples would represent basic science?
What will be an ideal response?