List any two major causes other than anthropogenic causes of the loss of biodiversity.

How many biodiversity hot spots have been identified in the world?

Study the four statements $(i-iv)$ given below and select the two correct ones out of them.

$(i)$ A lion eating a deer and a sparrow feeding on grains are ecologically similar in being consumers.

$(ii)$ Predator star fish Pisaster helps in maintaining species diversity of some invertebrates.

$(iii)$ Predators ultimately lead to the extinction of prey species.

$(iv)$ Production of chemicals such as nicotine, strychnine by the plants are metabolic disorders.

The two correct statements are

Which one of the following is not related to $5\; F’s$ of Chipko movement?

Using the figure, determine the percentage of bird species that will be lost if the island's inhabitable land area is reduced from $100,000\, km^2$ to $1\, km^2$.

$A$ : Island and area $(km^2)$