Question

biology - u01l02: carbon cycle modeling hw
homework
use the water cycle diagram and word bank below to write a 2 - paragraph narrative that describes the carbon cycle and explain why the cycle is necessary for biological organisms to function.
word bank

• respiration
• decomposition
• atmosphere
• sedimentation
• photosynthesis
• glucose
• carbon dioxide

Explanation:

The carbon cycle is a vital natural - process. Plants take in carbon dioxide ($CO_2$) from the atmosphere during photosynthesis and convert it into glucose. Animals eat plants and release $CO_2$ back into the atmosphere through respiration. When organisms die, decomposers break them down, releasing carbon back into the environment. Fossil fuels, formed from ancient organisms, release carbon when burned. This cycle is necessary for biological organisms as carbon is a key element in organic compounds like proteins, fats, and carbohydrates that are essential for life processes such as growth, repair, and energy production.

Answer:

The carbon cycle begins with plants absorbing carbon dioxide from the atmosphere during photosynthesis to produce glucose. Animals consume plants and release carbon dioxide back into the atmosphere through respiration. When living things die, decomposers break down their remains, returning carbon to the environment. Fossil fuels, made from ancient organisms, release carbon upon combustion. This cycle is crucial for biological organisms because carbon is a fundamental component of organic molecules necessary for growth, repair, and energy - related life processes.