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
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
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