Smoke particles and harmful gases released in air produces a
A. smoke
B. haze
C. fog
D. smog
Related Questions on Chapter 7: Man Impact on Ecosystem - Science Mcqs for Grade 8
Environment can be kept clean and green by using
A. less energy
B. environment friendly technology
C. protecting wildlife
D. all of them
If untreated waste water will be directly spill in to rivers, sea and lakes it may
A. contaminate
B. polluted
C. spread diseases
D. all of them
When forests are cleared on a very large scale by cutting or burning them down it is
A. forestation
B. deforestation
C. plantation
D. incantation