A population of snakes has 900 individuals. They have a death rate of 30 per year and a birth rate of 20 per year. Assuming 6 snakes migrate into the population and 3 migrate out of the population per year, how many individuals would there be after the first year? (To answer, write numerals in the box below.)

Question

Jayson Palmer

Biology

2 October, 20:44

A population of snakes has 900 individuals. They have a death rate of 30 per year and a birth rate of 20 per year. Assuming 6 snakes migrate into the population and 3 migrate out of the population per year, how many individuals would there be after the first year? (To answer, write numerals in the box below.)

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Answers (1)

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Brandon Cordova · Answer 1

893 snakes after first year

Explanation:

total population = 900

death = 30 per year left = 900-30 = 870

birth each year = 20 per year so 870 + 20 = 890 snakes

6 snakes migrate into the population = 890 + 6 = 896 snakes

3 migrate out of the population per year = 896-3 = 893 snakes