Match the environmental remediation method to its description.
soil vapor extraction
air sparging
bioventing
natural attenuation
Air is bubbled through groundwater to
remove volatile organic pollutants.
Natural processes break down the
pollutants.
Air is circulated through perforated
pipes in the contaminated soil.
Air is pumped into or out of soil to
supply oxygen to microbes.
Answers: 2
Biology, 21.06.2019 19:00, sa12340
4.06 hc)a five-year review of threats to the southern resident orca population of the united states concluded that the top threats were prey availability, contaminants, and effects from recreational and whale watching vessels. further down the list are oil spills, disease, and effects from commercial vessels not targeting whales. how might this list be different if it were for transient whale populations, which have a larger average population size and live farther offshore in open waters? a)the transient population is more likely to be affected by contaminants. b)the transient population is less likely to be affected by whale watching vessels. c)the transient population is more likely to be affected by disease. d)the transient population is less likely to be affected by prey availability.
Answers: 1
Biology, 22.06.2019 01:00, nikoidurrant
Which of the following statements is true? a. there are more chromosomes in an organism than there are genes. b. there are more genes in an organism that there are chemical bases. c. dna is made of sugar, phosphate, and carbon. d. genes are found in specific locations on a chromosome.
Answers: 1
Biology, 22.06.2019 04:00, egr1387
What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.
Answers: 3
Match the environmental remediation method to its description.
soil vapor extraction
air...
soil vapor extraction
air...
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