Which of the following best describes sewage, fertilisers, and industrial effluents discharged into rivers?
Water pollutants
Sewage, fertiliser runoff, and industrial effluents, when discharged directly into rivers, introduce harmful chemicals, excess nutrients, and pathogens into the water body.
These contaminants degrade water quality, cause eutrophication, and harm aquatic life and human users of the water, making them water pollutants rather than merely biodegradable waste, soil nutrients, or air pollutants.
Hence, such discharges are best described as water pollutants.
Which environmental problem occurs when excess nutrients such as nitrogen and phosphorus enrich water bodies, causing algal blooms and possible toxin production?
Which health condition is most commonly associated with prolonged exposure to high levels of noise pollution in urban environments?
Which one of the following is a major environmental issue in eastern Canada?
One of the main causes of air pollution in cities is emissions from vehicles like cars and trucks. Cars emit various pollutants which are bad for human health when inhaled, like
1) Nitrogen oxides (NO x)
2) Carbon monoxide (CO)
3) Carbon dioxide (CO 2)
4) Benzene
Which of the above pollutants are not tolerated by human beings even at very low levels?Which of the following substances are harmful for health if present in food items?
1) Pesticide residues
2) Lead
3) Metanil yellow
4) Mercury
Select the correct answer using the code given below:
Which of the commonly used household item(s) release Bisphenol A (BPA) which is an endocrine disruptor and bad for human health?
1. Steel utensils
2. Plastic coffee mugs
3. Aluminium utensils
4. Plastic water storage bottles
Select the correct answer using the code given below:Which one of the following is a cause of acid rains?