Biosphere extends into………..
a) atmosphere
b) lithosphere
c) hydrosphere
d) all of these
Components of an Ecosystem:
Abiotic and biotic components are the….……. characteristics of environment
a) physical
b) chemical
c) both a and b
d) none of these
Sunlight is………………….component
a) biotic
b) abiotic
c) both a and b
d) none of these
Light intensity affects………
a) plants
b) animals
c) microorganisms
d) all of these
Waters covers………..…….surface of the earth
a) 90%
b) 99%
c) 70%
d) 15%
