Question

multiple choice 2 points
refer to the graph above. which statement best explains the population pattern displayed between 1910 and 1950?
the reindeer population fluctuated evenly in a predator - prey cycle
the population declined immediately because of harsh climate conditions
the reindeer population remained stable due to predator control
the population grew exponentially until it exceeded the islands carrying capacity, leading to a sharp crash from overgrazing and starvation

Explanation:

• The graph shows a population that first grows and then crashes.
• In a predator - prey cycle, there is a more regular oscillation, not the sharp growth and crash seen here. So the first option is incorrect.
• The population did not decline immediately; it first grew, so the second option is wrong.
• The population was not stable; it grew and then crashed, so the third option is incorrect.
• When a population grows exponentially (as seen in the initial growth phase of the graph) and exceeds the carrying capacity (the maximum number of individuals an environment can support), overgrazing (if it's a herbivore population) and starvation (due to lack of resources) can lead to a sharp crash, which matches the graph's pattern.

Answer:

The population grew exponentially until it exceeded the island's carrying capacity, leading to a sharp crash from overgrazing and starvation.