How to identify saturated and unsaturated compounds ?

(a) The aquatic animals live more in cold regionn why? (b) How to identify saturated annd unsaturated compounds?

What is meant by saturated and unsaturated carbon compounds ?

Identify saturated and unsaturated compound containing double bond and triple bond . C_4H_8

Identify saturated and unsaturated compound containing double bond and triple bond . C_2H_2

Identify saturated and unsaturated compound containing double bond and triple bond . C_3H_8

Identify saturated and unsaturated compound containing double bond and triple bond . C_5H_(12)

Saturated and unsaturated fatty acids