Is clearing of tropical rainforest a good practice in ecological studies? Advance four reasons for your answer and discuss its effects on the sustainability of an ecosystem.

Two main processes release carbon into the atmosphere:

• Respiration: All living organisms, including plants, animals, and microorganisms, release carbon dioxide ($\text{CO}_2$) into the atmosphere as a byproduct of cellular respiration, where organic compounds are broken down for energy.
• Combustion: The burning of fossil fuels (coal, oil, natural gas) and biomass (wood, forests) for energy, transportation, and industrial processes releases large amounts of stored carbon as $\text{CO}_2$ into the atmosphere.

One primary process removes carbon from the atmosphere:

• Photosynthesis: Green plants, algae, and some bacteria absorb $\text{CO}_2$ from the atmosphere and convert it into organic compounds (sugars) using sunlight as energy. This process stores carbon in biomass.

Maintaining a balanced ecosystem involves ensuring the stability and health of its components. This is achieved by preserving biodiversity, which ensures a variety of species can perform essential ecosystem functions. It also requires managing resource use sustainably to prevent overexploitation and pollution, and protecting natural habitats from destruction. These actions help maintain the delicate balance of energy flow and nutrient cycling within the ecosystem.

$$\boxed{\text{Processes adding carbon to the atmosphere are respiration and combustion. Photosynthesis removes carbon.}}$$ $$\boxed{\text{A balanced ecosystem is maintained by preserving biodiversity, sustainable resource use, and habitat protection.}}$$