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which of the following are two mechanisms for water pollution?

a.

high and low

b.

direct and indirect

c.

lethal and nonlethal

d.

harmful and innocuous

What is the difference between a license and a certificate in the healthcare system? a. a certificate grants the freedom to practice, while a license only confirms professional qualifications. b. a license grants the freedom to practice, while a certificate only confirms professional qualifications. c. medical doctors receive licenses, and nurses receive certificates. d. medical doctors receive certificates, and nurses receive licenses. i'll give you 30