Who proposed the three-domain system of classification?

An important evidence in favour of organic evolution is the occurrence of

$A$ feasible solution to an $LP$ problem,

Which of the following is an acidic salt?

$A$ particle falls from a height $h$ upon a fixed horizontal plane and rebounds. If $e$ is the coefficient of restitution,the total distance travelled before rebounding has stopped is

Diborane reacts with $HCl$ in the presence of $AlCl_3$ and liberates