The Following Questions Refer to the Figure Above Illustrating Soil

question 9

Multiple Choice

The following questions refer to the figure above illustrating soil horizons.NOTE: The labels are not the actual names of the soil horizons.
-Which of the following is true concerning root nodules?

• A) They may kill a plant.
• B) They are produced by a fungus.
• C) They remove nitrogen compounds from the plant.
• D) They convert the harmful ammonia that plant cells produce into gaseous nitrogen.
• E) None of these are true.

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Definitions:

Correlation

A measure of the relationship between two variables, indicating how one may predict or be associated with the other.

Causation

The action of causing something, indicating a relationship where one factor or event makes another happen.

Hard Sciences

Disciplines that rely on empirical and quantitative data to study the natural world, typically including fields like physics, chemistry, and biology.

Soft Sciences

Fields of study that focus on human behavior and societies, characterized by subjective methodologies, such as psychology and sociology.