Select the correct option:

A: Competition occurs when resources, such as space, light, and nutrients, are in short supply.

B: Generally, the interspecific competition is more intense than the intraspecific competition.

In which one of the following habitats does the diurnal temperature of soil surface vary most?

Identify the following statements as true $\left(\mathrm{T}\right)$ or false $\left(\mathrm{F}\right).$

A. Tiger census in our national parks is often based on pug marks and faecal pellets.

B. Size of population for any species is not a static parameter.

C. Per cent cover or biomass cannot be a meaningful measure to known population density.

D. Population density is necessarily measured in numbers.