Write whether the following statements are true or false .
(i) Communties with more species tend to be more stable that those with less species.
(ii) David Tilman found that plots with less species showed less year-to-year variation in total biomass.
(iii) A stable community must be resistant to invasions by ecotic species.
(iv) Effect of reduction in diversity has been explained by Alexander von Humboldt through rivet popper hypothesis.
