Question

1. Reduce the matrix to Echelon form and hence find its rank
A=
1234
1231
-1-112
-1-11-1
​

Answer 1

Answer:

Disadvantages of Plastics

Natural decomposition of plastic can last from 400-1000 years and few types of plastics are non-degradable as well.

Plastic materials clog waterways, oceans, seas, lakes etc.

Many animals eat plastic materials and die.

Plastic is widely used in packaging.