B N A Time SolutionA Depicts the positive acceleration phase

Solution

A- Depicts the positive acceleration phase.In this phase,with passage of time, as the environmental and nutritional conditions become favourable,the individuals in the population start to reproduce and thus the population starts to increase.

B-Depicts the negative acceleration phase. population.In this phase,with passage of time as the environmental and nutritional conditions becomes limited,the population that had once started to increase and had reached an exponential rate with birth rate and immigration exceeding the death rate and emigration now begins to decline with death rate and emigration exceeding birth rate and immigration.