Which of the Following Elements Cannot Be Utilized Directly from the Atmosphere

question 29

Multiple Choice

Which of the following elements cannot be utilized directly from the atmosphere by plants?

• A) carbon
• B) nitrogen
• C) oxygen
• D) phosphorus

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Definitions:

Prevalence

The total number of cases of a disease in a given population at a specific time.

Cross-Sectional Studies

Observational studies that analyze data from a population, or a representative subset, at a specific point in time.

Clinical Phase

A stage in the research and development process of new medical treatments that involves testing on human subjects to evaluate efficacy and safety.

Natural History

The course a disease takes in the absence of intervention, from its onset through its eventual resolution or progression to death.