Birth and Death Rate Questions

Explain why immigration and emigration are not likely to have an effect on the size of the islands moose population.

According to the graph, what happened to the size of the island's moose population from 1995 to 1997?

Compare the birth rate (number of eggs hatched) to the death rate in a population of snowy plovers that are increasing in size.

In an initial population of 100 snowy plovers, there were 30 births and 20 deaths in one year.

Based on the birth and death rates, identity the expected size of the snowy plover population at the end of the year.

At the end of the year, there were actually 80 snowy plovers in the population. Assuming there were no additional births or deaths, explain why the actual population size differed from the expected population size.

Current efforts to conserve plover populations include building wire fences around their nests and making certain beaches off limits to people.

Explain why making certain beaches off-limits during plover breeding season is a more effective conservation method then building fences around plover nests.