Name (Signature) birth rate, b rate death rate, d population density Look at the
ID: 188682 • Letter: N
Question
Name (Signature) birth rate, b rate death rate, d population density Look at the graph shown above very carefully before answering the question below (WARNING: the graph is different from one that we talked about in class!). If this population has no immigration or emigration, and thus its population growth is determined entirely by the per capita birth and death rates as shown above, then: a. the population has a single stable equilibrium where the birth rate and the death rates are equal (i.e., where the two curves intersect) b. the population density will be regulated over the long-term, and even given periodic perturbations c. the population's carrying capacity, K, occurs where the two curves cross; the population will d. the population's growth will be dominated by positive feedback processes, leading to either e. the pattern of population growth will not depend on the initial (starting) population density (for example, harsh weather events) will maintain its density within a stable range of equilibrium densities decline to the carrying capacity when densities are initially greater than K, and the population will increase to the carrying capacity when densities are initially less than K exponential growth or rapid decline to extinctionExplanation / Answer
A is wrong because if there was equilibrium both graph lines would become flat.
It is only an intersecting point in the graph.
It does not exhibit any equilibrium composition.
At the intersection point, the population still has a +ve birth rate and a negative death rate. This would ultimately lead to increase in population (deviation from equilibrium).
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