1.
Pond is an example of:

2.
The term biosphere is used for the zone of earth where life exists:

3.
Ecosystem may be defined as:

4.
The earth could have sustained more population if all the people would have been:

5.
Prairies and steppes are parts of the natural regions called:

6.
Which of the following habitats is most unsuitable for primary productivity:

7.
The pyramid that cannot be inverted in a stable ecosystem is the pyramid of:

8.
Nepenthes is a :

9.
The minimum number of components required for an ecosystem to survive:

10.
In an aquatic environment, microscopic animals and plants are collectively known: