Question

Complete the crossword puzzle.
Down
1. Species on the verge of extinction
2. A book carrying information about endangered species.
5. Consequences of deforestation
Across
1. Species which have vanished.
3. Species found only in a particular habitat.
4. Variety of plants, animals and microorganisms found in an area.

Answer 1

Hint: The international union for conservation of nature (IUCN) red list has set some criteria on the basis of which the animals are classified under different categories. These categories are using the set of quantitative criteria to evaluate the risk of extinction of thousands of species.

Complete Answer:
The IUCN red list has the mere purpose of conserving integrity and diversity of nature.
According to IUCN ,there are 7 categories in which species are classified. These are EXTINCT(EX), EXTINCT IN THE WILD(EW),CRITICALLY ENDANGERED( CR),ENDANGERED (EN),VULNERABLE (VU),NEAR THREATENED (NT),LEAST CONCERN(LC).
The answers of the above crossword are:
Across
1. Extinct
3. Endemic
4. Biodiversity
Down
1. Endangered
2.Red Data Book
5. Drought

Additional information: Red Data Book is the compilation of the threatened species across the globe.It is published by IUCN for monitoring the degree of extinction of the species from the Earth and to know which species are at the verge of extinction (or endangered).
Trees play a very significant role in binding the soil together. Due to deforestation, soil erosion takes place at a very high rate which in turn leads to desertification and causing some natural disasters like flooding,drought etc.

Note: Global warming is also one of the consequences of deforestation due to which the temperature of the Earth increases from the normal temperature by 1.4°C on an average. This may result in melting of glaciers or polar ice caps.Endangered species are the one which are at the verge of extinction because of their habitat loss, poaching and introduction of invasive species. Examples are black rhino,tiger,Asian elephant,blue whale, ganges river dolphin etc.Extinct species include passenger pigeon,Dodo,Pyrean ibex etc.