The average concentration of $CO_2$ in the atmosphere is
$10 ppm$
$100 ppm$
$300 ppm$
$1000 ppm$
It’s obvious.
Keystone species deserve protection because these
Soil is a mixture of
Read the following statements w.r.t. features of biomes and select the correct option for tropical rain forests
$a.$ Buttress roots
$b.$ Vines, lianas and epiphytes are abundant
$c.$ Highly leached soils
$d.$ Soil has high base content
$e.$ $30-40 \;m$ tall canopy structure with $2-3$ strata only
Give scientific reasons : Coral reefs not found in the regions from west Bengal to Andhra Pradesh but are found in Tamil Nadu and on the east Coast of India.
The light intensity can be measured by
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