Where Does Most of Earth's ¹⁴C Come From

question 30

Multiple Choice

Where does most of Earth's ¹⁴C come from?

• A) It is continually being formed as a result of the photosynthesis process
• B) It is continually being formed by the impact of cosmic rays on the atmosphere.
• C) It comes to Earth from outer space along with other cosmic rays.
• D) It was deposited on Earth when the solar system first evolved.
• E) It was deposited on Earth many years ago by meteors.

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Definitions:

Net Income

Net income is the total earnings or profit a company makes after deducting all its expenses, including taxes, interests, and depreciation.

Gross Profit

The difference between total revenue and the cost of goods sold, representing the profitability of a company's core activities before overhead.

Operating Expenses

The costs associated with the day-to-day operations of a business, excluding the cost of goods sold.