Burning of fossil fuel causes:
a) air pollution
b) global warming
c) both a and b
d) none of these
Which of the following are non-biodegradable materials…………
a) Dead animals
b) Dead plants
c) plastic
d) none of these
Which of the following things are biodegradables?
a) Cans `
b) Glass
c) Dead plants
d) all of these
Which of the following is non-biodegradable?
a) Grass clippings
b) Feather
c) Styrofoam
d) Paper
The materials which are decomposed into simpler substances by natural process are called
a) Biodegradable
b) Non-biodegradable
c) Chloro-fluoro carbons
d) None of these
Materials cannot be decomposed into simpler forms by natural process.
a) Biodegradable
b) Non-biodegradable
c) CFC
d) None of these
