Nitrogen Is the Most Abundant Element in the Atmosphere, and a Crucial

question 115

Multiple Choice

Nitrogen is the most abundant element in the atmosphere, and a crucial component of proteins, vitamins, and nucleic acids. However, plants and other producers cannot use nitrogen in its natural form (N2) . Nitrogen has to undergo a process called nitrogen fixation. What does this process involve?

• A) Ammonia is converted to nitrate.
• B) It is the synthesis of ammonia from nitrogen gas by certain bacteria.
• C) Nitrate is converted to ammonia.
• D) Nitrogen is accumulated in dead organic matter.
• E) It is undertaken by denitrifying bacteria.

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Definitions:

Development

The process of growth and change that a person goes through over the course of their life, encompassing physical, cognitive, and socioemotional changes.

Week

A time period consisting of seven consecutive days, commonly used as a unit of time to structure the calendar.

Fetal Period

The period that begins in the 9th week after conception, with the first signs of the hardening of the bones, and continues until birth.

Organ System

refers to a group of organs that work together to perform one or more functions in the body, such as the digestive or respiratory systems.