1. Consider the following:

(1) Birds

(2) Dust blowing

(3) Rain

(4) Wind blowing.

 

Which of the above spread plant diseases?

1. 1 and 3 only

2. 3 and 4 only

3. 1, 2 and 4 only

4. 1, 2, 3 and 4

Correct Answer :

1, 2, 3 and 4