Why are contaminants such as TCEs and PCBs so difficult to remove using traditional methods?
A. They easily adsorb onto organic matter in the environment.
B. They are too toxic to be safely handled.
C. They naturally degrade into harmless forms that cannot be distinguished from the natural chemical makeup of the environment.
D. They are so volatile they escape into the atmosphere so they're impossible to contain.
Answer: A
You might also like to view...
Oxidative phosphorylation is to cellular respiration as ________ is to photosynthesis.
-carbon fixation -the splitting of H2O -the ETC -light capture by chlorophyll -the reduction of NADPH
Which of the following is a symptom of Cushing's disease?
a. loss of ability to cope with stress b. mild infection c. abnormally large face and hands d. fat deposition around the trunk e. mental retardation
Microevolution involves ___
A. changes to the number of individuals in a population. B. changes in a population's gene pool. C. a change in the ratio of males to females in a population. D. the fixation of an allele over a long period of time.
Conjugation is the process by which ________
a. bacterial cells swap plasmids b. bacterial cells swap chromosomes c. one bacterium donates a single-stranded plasmid to another bacterium d. one bacterium donates a double-stranded plasmid to another bacterium