Organic Matter

Organic matter is the term used to describe the materials that make up living organisms, or the remains of living organisms that have not fully decomposed. It is made up of complex compounds containing carbon, hydrogen, oxygen, nitrogen, and other elements. Organic matter is crucial for the health of soil and plays a key role in various ecological processes.

Composition of Organic Matter

Organic matter is composed of a variety of substances, including:

Importance of Organic Matter

Organic matter is essential for soil fertility and structure. It provides nutrients for plants, improves soil water retention, and promotes the growth of beneficial microorganisms. Additionally, organic matter helps to mitigate the impacts of erosion and contributes to the overall health of ecosystems.

Study Guide

Here are some key points to remember about organic matter:

What is organic matter and what elements does it contain?
What are the main components of organic matter?
Why is organic matter important for soil?
How does organic matter contribute to ecosystem health?

◂Science Worksheets and Study Guides Fourth Grade. Earth's Waters

Vocabulary/Answer key

Earth's Waters

Vocabulary/Answer key

Earth's Waters

The resources above cover the following skills:

Concepts of Life Science: A student should understand and be able to apply the concepts, models, theories, facts, evidence, systems, and processes of life science. A student who meets the content standard should:

Develop an understanding that all organisms are linked to each other and their physical environments through the transfer and transformation of matter and energy.

Concepts of Earth Science: A student should understand and be able to apply the concepts, processes, theories, models, evidence, and systems of earth and space sciences. A student who meets the content standard should:

Develop an understanding of Earth's geochemical cycles.