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dmitriy555 [2]
3 years ago
13

In a certain population of rabbits one year, 25 new rabbits are born and 5 move into the population from surrounding areas. Howe

ver, 10 rabbits die, and 5 leave the population. What is the population change?​
Biology
1 answer:
sleet_krkn [62]3 years ago
6 0

Answer:

Population change is 15

Explanation:

To calculate the change in populations, we add up the immigrants and births and the subtract the deaths and emigrant from it

Change in pop = (birth + immigrants) - (death + emigrants).

Where birth is 25, immigrants is 5, death is 10 and emigrants is 5.

Change in pop = (25+5) - (10+5)

= 30-15

Change in population is 15.

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<h3>What is Carbon 14?</h3>

Carbon 14, also known as radiocarbon, is a radioactive carbon isotope.

Isotopes are the atoms of the same element -carbon- that vary in neutrons and, hence, in their massic number. They are alternative forms of the same element.

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In other words, the half-life is the time it takes for half the mass of this isotope to become its daughter form.

Knowing the half-life of an element is useful to determine the age of the dead matter.

C14 is used in radiocarbon dating techniques or methods to estimate the age of fossils. This is a reliable technique used for dating organic samples that are less than 50,000 years old.

An easy way of representing the change in mass of the isotope through the years is to make a line graph, which is easy to interpret and compare the information.

In this example, our line graph must represent the number of half-lives related to the amount of parent isotope in grams.

The table details the years and the amount of isotope. So, by kowing the half-life of C-14, we can get how many half-lives there are.

5,700 years ---------- 1 half-life

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17,100 years -------- X = 3 half-lives ⇒ (5700 x 3) or (17,100/5,700)

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28,500 years ------ X = 5 half-lives ⇒ (5700 x 5) or (28,500/5,700)

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                 2................................2,500

                 3 ................................1,250

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<u>                  9 .................................   20         </u>

<u />

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