Which of the following is true about pattern of biodiversity?

(i) In general, species diversity decreases as we move away from the equator towards the poles.

(ii) Tropics generally (latitudinal range of 23.5 o N to 23.5 O S) harbor more species of animal but less plant than temperate or polar areas.

(iii) India, with much of its land area in the temperate latitudes, has more than 1,200 species of birds.

(iv) A forest in a tropical region like Equador has up to 10 times as less species of vascular plants as a forest of equal area in a temperate region.

(v) Amazonian rain forest in South America is home to more than 40,000 species of plants, 3,000 of fishes, 1,300 of birds, 427 of mammals, 427 of amphibians, 378 of reptiles and of more than 1,25,000 invertebrates.

(vi) Constant environments promote niche specialization and lead to a greater species diversity.