The cause of the decline in population in $1927$ was:

Give scientific reasons: When a plant culture is grown in a limited amount of nutrient medium,growth is slow in the initial stage (lag phase). It increases rapidly in the exponential phase and again slows down in the stationary phase.

The statement 'Food supply increases in an arithmetic progression,while population tends to increase in a geometric progression' was proposed by:

In nature, a given habitat has enough resources to support a maximum possible number, beyond which no further growth is possible. This characteristic feature of nature is known as

In a population having a high growth rate,the age pyramid is represented by:

When resources in the habitat become progressively limited,the growth pattern observed is.......?