Question

Question 21
The compass always point towards the north. Which one of the following is the correct explanation for
this?
a) The Earth is a magnet and therefore it attracts the metallic needle of the compass.
b) The magnetic needle of the compass aligns itself with the Earth’s magnetic field.
c) The Earth’s south pole does not have a magnetic pull hence the compass points towards the
north.
d) The needle of the compass always points in the upward direction.

Answer 1

Answer:

b) The magnetic needle of the compass aligns itself with the Earth’s magnetic field is the answer

Explanation:

Answer 2

Answer:

Which one of the following is NOT an indicator of the degradation of a water body?

a) Increased transparency

b) Decreased species diversity

c) Increased sedimentation

d) Decreased oxygen concentratio