Interactions among Living Things Answers

Adult giraffes eat about 75 pounds of food in a day. On average, an area can provide 450 pounds of food per day for giraffes.Based on this information only, what is the carrying capacity for adult giraffes in this area?

Carrying capacityPopulation growthLimiting factorImmigration rate

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)

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

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)

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.

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?

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?

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?

carrying capacityimmigrationa limiting factora resource