Where the pyramid of energy is narrowest?
a) top
b) center
c) same everywhere
d) base
Changes in an Ecosystem and its Effects:
Which of the following is considered as medium of life in an ecosystem?
a) soil
b) temperature
c) acids
d) water
Which of the following directly depends on water?
a) plants
b) animals
c) all forms of life
d) fungi
How much aquatic life is present on earth?
a) 10%
b) 30%
c) 50%
d) 90%
Which of the
following is/are critical part of global water cycle?
a) forests
b) wetland
c) grassland
d) all of these
