The scientist who classified plants based on their habitat is .........

If $A$ and $B$ are two events such that $P(A) \neq 0$ and $P(B) \neq 1$,then $P\left( \frac{\bar{A}}{\bar{B}} \right) = .....$

$A -$ Events after the formation of zygote are called post-fertilization events.
$R -$ In viviparous animals,a young one develops outside the mother's body.

How many chloride ions are there around a sodium ion in a sodium chloride crystal?

$\alpha-D$-Glucopyranose and $\beta-D$-Glucopyranose are

If $\alpha+\beta=-2$ and $\alpha^3+\beta^3=-56$,then the quadratic equation whose roots are $\alpha$ and $\beta$ is