Evergreen Forest

The giant squirrel Ratufa indica occurs along the west coast. The population living in Gujarat (dry deciduous forests ) has a yellow fur , population from Maharashtra (moist deciduous forests ) has light brown fur , that form Mysore (semi-evergreen forests) deep-brown and from Kerala (wet evergreen forests ) chocolate -brown fur. (a)Account for the difference in their fur colour. (b)How would you explain that they belong to the same species ?

{:("List-I (Natural Vegetation of India)",,"List-II (Annual Rainfal Received)"),("A Tropical evergreen forests",,"1 100-200 cm"),("B. Tropical deciduous forests",,"2. Above 200 cm"),("C. Tropical dry forests",,"3 Less than 50 cm"),("D. Arid forests",,"4. Above 300 cm"),("",," 5. 50-100 cm"):}

Evergreen trees remain green throughout the year on account of

Which of the three forests- Temperate, Mangroves and Tropical Evergreen is more vulnerable to invasion by outside animals and plants?