In the following equation of Verhulst - Pearl logistic growth, the letter $\text{'}\mathrm{r}\text{'}$ denotes ___ .

$\frac{\mathrm{dN}}{\mathrm{dt}}=\mathrm{rN}\left(\frac{\mathrm{K}-\mathrm{N}}{\mathrm{K}}\right)$

The shape of the pyramids reflects the growth status of the population. Identify the type of age pyramid represented below for human population.

Relate Column I with Column II with regard to predatory behaviour

Assertion (A): The Monarch butterfly feeds on poisonous weeds during its caterpillar stage.

Reason (R): It helps butterfly to become distasteful to the predator.