The process by which we know which organism is associated with a specific name is called ........ .

How do living organisms adapt to their environment?

Define the following terms:
$(i)$ Unicellular organism
$(ii)$ Multicellular organism

$S$ Statement: Reproduction leads to an increase in the number of organisms.
$R$ Reason: In reproduction,organisms produce new individuals similar to themselves upon reaching maturity.
$(a)$ Both $S$ and $R$ are true,and $R$ is the correct explanation of $S$.
$(b)$ Both $S$ and $R$ are true,but $R$ is not the correct explanation of $S$.
$(c)$ $S$ is true and $R$ is false.
$(d)$ $S$ is false and $R$ is true.

Statement $P$: Every living organism exhibits unique characteristics such as reproduction,growth,development,adaptation,and death.
Statement $Q$: Energy transformation is essential for every living organism.

In addition to unique characteristics like reproduction,growth,development,response to environment,death,and adaptation,which other characteristic can be added to living organisms?