The presence of high coliform counts in water indicate:
contamination by human wastes.
phosphorus contamination.
decreased biological oxygen demand.
hydrocarbon contamination.
Which of the following diseases is transmitted by mosquitoes?
Cholera
Typhoid
Cryptosporidiosis
Malaria
What are pollutants that interfere with the normal functioning of hormones called?
Radioisotopes
Synergists
Stimulants
Endocrine disruptors
The underground water is mainly polluted due to:
entering of polluted water to the water table.
the construction of polluted water.
the construction of well.
oil spills.