The $ pH$ of a fertile soil is usually around
$2 -3$
$6 -7$
$8 -10$
$11 -12$
It’s obvious.
$A$ : Estuary constitutes one of the most productive ecosystem. $R$ : It represents transition zone between two populations of a species.
Which of the following is correct
The soil with poorest water holding capacity is
Which of the following statements is correct for species
Ectothermic animals are also called
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