A researcher surveys the number of salamanders in a population in Michigan each year. Over a 10-year period, the number of individuals that she counts in the population varies. Which of the following might explain the variation in this count from year to year?

Question

Quizplus · Accepted Answer

Annual weather conditions can directly affect the number of salamanders by influencing their environment and resources. Competition among salamanders or with other species can also impact their numbers by affecting access to resources. Both factors can cause yearly variations in the population count.

A Researcher Surveys the Number of Salamanders in a Population