Formulae on Ecology


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Xerophytes have a very low area/volume ratio of their body, a very high root /shoot ratio, highly developed xylem and sclerenchyma in general. They have a thick cuticle, stomata either sunken or present in pits/crypts as in Nerium, and commonly possess a multiple epidermis . Most adapted xerophytes like cacti and succulents even possess nocturnally opening (scotoactive) stomata.

Notable dates with reference to environment are : February 2 (World Wetlands Day) , March 21 (World Forestry Day), April 22 (Earth Day) , June 5 (World Environment Day), July 6 (Vanmahotsav), July 11 (World Population Day), October 1 to 7 (Wildlife week), November 1 (World Ecology Day) , and December 3 (World Conservation Day).

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