Carnivorous plants feed on insects because these plants grow on marshy places deficient in…………
a) carbon
b) nitrogen
c) calcium
d) iron
Greenhouse traps…………….
a) carbon dioxide
b) heat
c) light
d) water
The most common non-biodegradable pollutant is……..
a) wood
b) leaf litter
c) bodies of dead animals
d) plastic bags
