Why Does Mercury Have a Thin Layer of Hydrogen and Helium

question 69

Multiple Choice

Why does Mercury have a thin layer of hydrogen and helium as an atmosphere?

• A) Other elements move fast enough to escape Mercury's gravity.
• B) Mercury temporarily traps solar wind particles.
• C) These are outgassed by rocks in Mercury's crust.
• D) These gases are released during impacts with comets.

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Definitions:

Rate of Return

Rate of return is the gain or loss of an investment over a specified period, expressed as a percentage of the investment's initial cost.

Market Rate of Return

The average or expected return of the marketplace on investments, often used as a benchmark to assess the performance of individual investments or portfolios.

Annual Dividend

The total dividend payment issued to shareholders over a one-year period, reflecting the company's profit distribution policy.

Dividend Growth Rate

The dividend growth rate is the annual percentage rate at which a company's dividend payments have increased or are projected to increase.