Question

Pollutants directly emanating from human activities are:
a. Quantitative pollutants
b. Qualitative pollutants
c. Air pollutants
d. Water pollutants

Answer 1

Hint: A material or energy which is introduced into the atmosphere which has numerous undesired effects, or harmful affects the utility of a resource is called a pollutant. The damage caused by a pollutant can last a long or short effect on the environment. It is capable of damaging the environment by altering the growth rate of plant or animal species, or it can interfere with human comforts, comfort, well-being, or asset values.

Complete answer:
- The substances like pesticides, insecticides, etc. are called Qualitative Pollutants can be the examples of the Pollutants directly emanating from human activities.
- These materials are normally not present in the environment. We can say that these are added by human beings. Such materials are called 'Qualitative Pollutants'.
- One can define the Quantitative pollutants as the substances which are already present in the environment, however, when their concentration (quantity) increases in the environment, then they are termed as pollutants.
- Air pollutants are the term used to denote the materials in the air which degrade the quality of the atmosphere.
- In addition, Water pollutants are the term used to denote the materials present in the water bodies which degrade the quality of them.

Hence, the correct answer is option (B).

Note: Both the cases of water pollution and land contamination, it is a matter of quality degradation. This process includes the addition of a chemical substance in the composition of air which makes the difference between "anodyne" and "pollution." The presence of gas Carbon dioxide is about 0.05 percent around us at a typical concentration. It is a fact that there is no harm in breathing such an amount of gas into our body. However, if there is an increase in the percentage, it can be an immediate cause of a person’s death.