Soil Review 1

Front

What is humus?

Back

Humus is the organic component of soil formed from the decomposition of plant and animal matter.

Front

What is the bottom layer of a soil profile called?

Back

The bottom layer of a soil profile is called bedrock.

Front

Why is soil considered an important natural resource?

Back

Soil is important because it can grow crops, which are essential for food production.

Front

Which layer of soil contains the most organic material?

Back

The top layer, known as topsoil, contains the most organic material.

Front

What is the layer of soil just below the topsoil?

Back

The layer of soil just below the topsoil is called subsoil.

Front

What are the three main types of soil particles?

Back

The three main types of soil particles are sand, silt, and clay.

Front

What role do microbes play in soil?

Back

Microbes help decompose organic matter, recycle nutrients, and improve soil structure.

Front

What is the process of soil formation called?

Back

The process of soil formation is called soil genesis.

Front

What is the significance of soil texture?

Back

Soil texture affects water retention, drainage, and nutrient availability for plants.

Front

What is the term for the uppermost layer of soil that supports plant life?

Back

The uppermost layer of soil that supports plant life is called topsoil.