Distinguish between: Species Diversity and Ecosystem Diversity.

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Species DiversityEcosystem Diversity
It refers to the variety and abundance of species within a specific region or community.It refers to the variety of habitats,biotic communities,and ecological processes in the biosphere.
It focuses on the number of different species and their relative abundance in a given area.It focuses on the diversity of ecosystems such as deserts,rainforests,mangroves,coral reefs,etc.,in a geographical region.
Example: The number of different species of birds or trees in a forest.Example: The presence of diverse ecosystems like alpine meadows,wetlands,and estuaries in a country like India.

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Identify the correct statements :
$1.$ According to $\text{IUCN} (2004)$,the total number of described species is slightly more than $1.5$ million.
$2.$ Robert May estimated the total species diversity on Earth to be around $7$ billion.
$3.$ Insects make up more than $70 \%$ of all recorded animal species.
$4.$ India,with $2.4 \%$ of the world's land area,contributes $8.1 \%$ to global species diversity.

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Insects are the most numerous,with an estimate of:

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