In a Typical Mineral Soil in Optimal Condition for Plant

question 39

Multiple Choice

In a typical mineral soil in optimal condition for plant growth,approximately what percentage of the pore space would be filled with water and what percentage filled with air?

• A)10% water and 90% air
• B)90% water and 10% air
• C)25% water and 25% air
• D)50% water and 50% air
• E)25% water and 75% air

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Definitions:

Field Researchers

Professionals who conduct research outside of a laboratory setting, gathering data directly from natural or real-world environments.

Surveys

A method of gathering data from a large number of people, typically by asking a series of questions.

Evaluation Research

A systematic method for collecting, analyzing, and using information to answer questions about projects, policies, and programs, particularly about their effectiveness and efficiency.

Secondary Data Analysis

The process of analyzing data that was collected by someone else for a different purpose.