Practicing Success

Target Exam

CUET

Subject

Biology

Chapter

Environmental Issues

Question:
Assertion: Pollution is always caused by human activities.
Reason: Pollution is not different from contamination.
Options:
Both Assertion (A) and reason (R) are correct and R is the correct explanation of A.
Both Assertion (A) and reason (R) are correct and but R is not the correct explanation of A.
Assertion (A) is true but Reason (R) is not correct.
Both Assertion (A) and Reason are false (F ).
Correct Answer:
Both Assertion (A) and Reason are false (F ).
Explanation:
Pollution may be defined as an undesirable change in physical, chemical or biological characteristics of air, water and land causing harmful effects on living organisms. Pollution can be natural or man made. Natural pollution includes volcanic eruptions, soil erosion, UV- rays, etc. Pollution is different from contamination. Contamination is the presence of harmful organisms causing disease.