(a) (i) Three of Koppen's major climatic groups ere:
(i) Those based on climate and vegetation
(ii) Those based on temperature
(iii) Those based on precipitation-evaporation ratios.
(ii) The basis of Koppen's classification is vegetation.
(b) Two types of climate within Koppen's first group and their features are:
(i) The moist and Hot climate; features;
(i) Tropical rainy climate
(ii) Average monthly temperature above 18°C
(iii) Climate has no winter seasons
(iv) Annual rainfall is large and exceeds annual evaporation
(ii) The moist and warm climate: features:
(i) Coldest month has an average temperature of under 18°C
(ii) Has above —3°C in at least one month
(iii) Has an average temperature of above 10°C
(iv) It has both summer and winter seasons.