b) Hydrogen sulphide is necessary to life.
c) both oxygen and hydrogen sulphide are necessary to life.
d) oxygen is not necessary for marine life
e) There are different layers of waters in the ocean
ANSWERS:
- d
- b
- d
- e
- a
Passage 4:
It is not luck but labour that makes man. Luck, says an
American Writer, is ever waiting for something to turn up;
labour with keen eyes and strong will always turns up something.
Luck lies in bed andwishes the postman would bring him news of