Sensory clues to the possible presence of hazardous materials in water include:

Question

Question: Sensory clues to the possible presence of hazardous materials in water include:

Options:

1.  Dead fish
2.  White froth
3.  Unusual algae growth
4.  All of these

Answer 1

4. All of these

Sensory clues to the possible presence of hazardous materials in water include Dead fish, White froth, Unusual algae growth... etc.