Question

logistic growth
when a population is growing exponentially, resources are plentiful and there are no factors to interfere with survivability. however, most populations face limited resources and thus show a logistic growth pattern. during logistic growth, a population begins with a period of slow growth followed by a period of exponential growth before leveling off to a stable size. a graph of logistic growth takes the form of an s - shaped curve, as shown in figure 7. during the initial growth period, resources are abundant, and the population is able to grow at a fast rate. over time, resources are reduced, and growth starts to slow. as resources become even more limited, the population levels off at a size the environment can support.
analyze according to the logistic growth graph, in what year did the limited availability of resources cause the population to begin to stabilize?
a. year 1
b. year 3
c. year 5
d. year 7
evidence notebook when the sea otter population began to increase again, the population of many other species began to change.

1. which factors should scientists measure to learn how each population changed over time?
2. how would scientists know if populations were increasing or decreasing over time?
3. how might the increase in sea otters change the growth patterns of other species?

Explanation:

Step1: Identify the leveling - off point

In a logistic growth curve, the population starts to stabilize when the curve levels off. Looking at the graph, we can observe the point where the population growth slows down and the population size becomes relatively constant.

Step2: Determine the year

By examining the x - axis (representing years) and the shape of the curve, we can see that the population starts to level off around year 5.

Answer:

C. year 5