as with the cockroaches, human populations cannot continue to grow exponentially; at some point, we will reach the carrying capacity of the planet. thus, the growth curve of all populations (humans included) will eventually approximate a logistic curve. that is, the population will increase exponentially until it reaches a point at which individuals in the population are affected by environmental constraints on their growth. at that point, the rate of growth declines until the population reaches carrying capacity, and the growth rate of the population reaches zero.
1 The graph in Figure 32.5 shows a logistic growth curve. Population size- Time a. Which part of the curve depicts the initial phase of early, rapid, exponential growth? b. Which part of the curve depicts the decline in growth rate? top portion Blue portion Black portion bottom portion Complete the short answer question using complete sentences and so or fewer CHARACTERS (NOT WORDS). Note: Character counts include spaces 3 List some density-independent factors that could be responsible for the shape of this curve. Consider some abiotic factors that could potentially lead to decreased birth rates or increased death rates? Type answer here 4 List some density-dependent factors that could be driving the shape of the logistics growth curve. (Hint: Consider what biotic factors could be driving changes in birth rates or mortality?)
