Solar radiation, heat balance and temperature

Make correct pairs from the following two columns.
(i) Insolation
(a) The difference between the mean
temperature of the warmest and the coldest
months
(ii) Albedo
(b) The lines joining the places of equal
temperature
(iii) Isotherm
(c)
The incoming solar radiation
(iv) Annual range (d) The percentage of visible light reflected by
an object