In a pond, there were $20$ lotus plants and $10$ new plants were added. Calculate the birth rate for the year.

List any four characters that are employed in human population census.

Which of the following is not a part/component of population attributes?

The percentage of the population of India living in Madhya Pradesh $(M.P.)$ at present is approximately: (in $\%$)

In a population,there are $100$ small-sized Parthenium plants and only $1$ large-sized Banyan tree. Which of these has a lower population density?

Read the following statements and select the correct option with respect to population attributes:
$(a)$ Population density is necessarily measured in numbers.
$(b)$ Tiger census is often based on pug marks and fecal pellets.
$(c)$ Biomass is not a meaningful measure to know population size.
$(d)$ Size of a population for any species is not a static parameter.