Question

Explain how the age of living things is determined with the help of Carbon-14 dating.
How many years have gone by since 185 BCE?
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Answer 1

Explanation:

Scientists know how long it takes for half of a given quantity of carbon-14 to decay — a length of time called a half-life. ... While radiocarbon dating is useful only for materials that were once alive, scientists can use uranium-thorium-lead dating to measure the age of objects such as rocks.

1 AD to 2018= 2018+185= 2203 years.

Answer 2

Answer:

Polar bodies are formed each monthe after attaining puberty. Hence, total years of polar bodies formation are equal to the difference between the age of puberty till date.

Hence, total years of polar bodies formed = 24 - 14 = 10.

Hence, total number of polar bodies formed = 10 x 12 = 120.

She has two children born by normal delivery.

So, 3 extra polar bodies are formed.

For one child absence of polar bodies formation = 15 months, where 9 months of gestation and 6 months of lactation.

So, for 2 child, it will be 15 x 2 = 30.

Hence, net polar bodies formed in her body till date - 120 + 2 - 30 = 92.

Thus, the correct answer is '92.'