The most common source of infectious diseases in water supplies is _______.
Aalgal blooms
Bsewage
Csurface runoff
Dnone of the above
User: Which of the following is a nonrenewable resource?
Ageothermal
Bsolar
Cnuclear
Dbiomass
Aalgal blooms
Bsewage
Csurface runoff
Dnone of the above
Ageothermal
Bsolar
Cnuclear
Dbiomass