List the sources of e-wastes.

(a) How was IR-8 variety produced? (b) List the source of e-wastes.

Write a short note on electronic waste. List the various sources of e- wastes and the problems associated with its disposal.

Write a short note on electronic waste. List the various sources of e- wastes and the problems associated with its disposal.

Write a short note on electronic waste. List the various sources of e-wastes and the problems associated with its disposal.

Write a short note on electronic waste. List the various sources of e-wastes and the problems associated with its disposal.

Name any two sources of e-wastes and write two different ways for their disposal.

List out the sources of noise pollution.

List nad describe the sources of heat.