Question

. When the heat, a by-product of combustion, increases the temperature of an eco-system, it is called
(A) Thermal pollution
(B) Global warming
(C) Green house gases
(D) None of these​

Answer 1

Answer:

I think

B. Global warming

Answer 2

Answer:

May be, Global warming,because the by products of combustion will increase the level of carbon dioxide and decrease level of oxygen in atmosphere,

Explanation:

I am not sure ,,.