Q3 of 58 Page 1

List two natural ecosystems.

The natural ecosystem is a biological environment found in nature rather than being created by man. It is of two types -

a) Terrestrial ecosystem - A terrestrial ecosystem is an ecosystem that exists on land.

Example - desert, forest.

b) Aquatic ecosystem - A terrestrial ecosystem is an ecosystem that exists in the water bodies.

Example - pond, river, lake.

Write the next homologue of each of the following:

(i) C₂H₄

(ii) C₄H₆

Name the part of Bryophyllum where the buds are produced for vegetative propagation.

State two positions in which a concave mirror produces a magnified image of a given object. List two differences between the two images.

List four advantages of properly managed watershed management.