51.

Explain:

(i) Exponential population growth

(ii) Environmental Resistance

(i) In exponential growth, a population's growth rate stays the same regardless of population size, making the population grow faster and faster as it gets larger. Exponential growth produces a J-shaped curve.

(ii) Environmental resistance factors are things that limit the growth of a population. They include biotic factors - like predators, disease, competition, and lack of food - as well as abiotic factors - like fire, flood, and drought.