Carbon Cycle Flashcards

Study Notes

Carbon Cycle Overview

The exchange of carbon between the environment and living organisms is known as the carbon cycle.

Key Processes Driving the Carbon Cycle

Photosynthesis: Plants utilize carbon dioxide (CO2) from the atmosphere to produce sugars, which serve as energy sources.
Respiration: Living organisms break down sugar molecules to release energy, returning carbon to the environment in the process.

Role of Photosynthesis

Plants absorb CO2 for the creation of sugars, integral to their growth and energy needs.
Most living organisms obtain the carbon necessary for life by consuming these plants.

Role of Respiration

Respiration results in the release of carbon back into the atmosphere as sugar molecules are broken down for energy production.

Role of Decomposition

Fungi and bacteria decompose organic matter, returning essential components such as organic matter, water, and CO2 back to the environment.

Organic Matter Composition

All forms of organic matter inherently contain carbon as a fundamental building block.

Role of Combustion

The process of combustion, evident in burning wood or fossil fuels, adds carbon dioxide to the atmosphere, contributing to the carbon cycle.

Humus Definition

Humus refers to organic matter at various stages of decomposition present in the soil, contributing to the characteristic dark brown or black color of fertile soil.

Description

Explore the key concepts of the carbon cycle through these flashcards. Learn about the exchange of carbon between living organisms and the environment, as well as the crucial processes of respiration and photosynthesis. Mastering these concepts is essential for understanding ecosystem dynamics.