Populations Answers

During one year a population of blue jays has zero population growth. Which must be true about the blue jay population at the end of the year compared to the beginning of the year?

In contrast to most animals, which resource do plants typically compete for?

During one year, eight turtles are born into a population. Ten turtles immigrate into the population, but two emigrate to find mates.If the overall population growth is nine turtles, what was the death rate of turtles during the year?Use this formula:population growth = (birth rate + immigration) – (death rate + emigration)

One breezy spring, many rabbits are born in a forest. During the warm summer, several wolves move to the forest and many plant-eating birds fly away.Which is a limiting factor that would most likely decrease the rabbit population?

Which changes would most likely limit the growth of a plant-eating animal population? Select four options.The number of predators decreases.Steady rainfall increases the number of plants. A spring freeze kills many plants. The number of predators increases.A harmful plant disease spreads through the area.A harmful animal disease spreads among the population.

During one year, two rabbits were born into a population and five emigrated to look for better food sources. Seven rabbits died in the population and 12 immigrated into the population.What was the population growth during this year?Use this formula:population growth = (birth rate + immigration) – (death rate + emigration)

Which of these limiting factors could cause tree squirrels to lose their homes?

A population of frogs in a pond began with 67 individuals. Over one year, the population changed to 53.Which are two possible reasons for the change within the frog population?

During one year, eight moose in a population died and two moose were born. Three moose immigrated from another population and five emigrated to find mates.What was the population growth during this year?Use this formula:population growth = (birth rate + immigration) – (death rate + emigration)

A population of ducks lives at a small pond that is slowly drying up. Which statement describes what will most likely happen over time?