Why Is There Free Oxygen in the Air

question 19

Multiple Choice

Why is there free oxygen in the air?

• A)Organisms need oxygen to manufacture ATP.
• B)Free oxygen has been present since the formation of the earth's atmosphere.
• C)Evaporation of the oceans liberated oxygen.
• D)It is a by-product of photosynthesis.

Comprehend the basics of neuron function, including action potentials and neurotransmitter roles.

Recognize how brain injuries, diseases, or conditions affect neurological function.

Describe techniques and research methodologies used to study the brain and its functions.

Understand how environmental factors and experiences can influence brain structure and function.

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Definitions:

Defined Benefit Plan

A type of pension plan where the employer promises a specified pension payment upon retirement, based on an employee's earnings history, tenure of service, and age.

Defined Contribution Plan

A type of retirement plan where the amount contributed to the plan is specified, but the benefit received at retirement depends on the plan's investment performance.

Endowment Fund

A fund established by a foundation, institution, or individual, where the principal amount is kept intact while the investment income is available for use.

Variable Annuity

An insurance product that provides future payments to the holder, with the payouts varying depending on the performance of the investment options chosen.