Fossil fuels, such as coal, oil, and natural gas, are formed from the remains of ancient plants and animals and take millions of years to replenish, making them non-renewable.

Recycling involves reprocessing waste materials into new materials and objects, reducing the need for raw materials and minimizing waste.

Carbon dioxide is the most significant greenhouse gas, contributing to the greenhouse effect by trapping heat in the atmosphere.

Habitat destruction, such as deforestation and urbanization, is a major cause of biodiversity loss, as it reduces the available space and resources for species to survive.

Crop rotation is a sustainable agricultural practice that involves growing different crops in the same area in sequential seasons to maintain soil fertility and reduce the risk of pests and diseases.

Conservation encompasses a range of practices aimed at protecting and managing natural resources and ecosystems, including habitat protection, sustainable use, and restoration.

Nuclear energy, while not strictly renewable, is considered a low-carbon energy source as it does not produce greenhouse gases during operation.

Waste reduction involves minimizing the amount of waste generated at the source, such as by using reusable products, reducing packaging, and composting organic waste.

Industrial emissions, particularly from factories and power plants, are a major source of air pollution, releasing harmful pollutants such as nitrogen oxides, sulfur dioxide, and particulate matter.

Endangered species protection involves specific measures to protect and recover populations of species facing the risk of extinction.

Selective logging involves harvesting trees while maintaining the overall health and diversity of the forest ecosystem.

Energy efficiency involves using less energy to perform the same task or achieve the same level of comfort.

Sewage discharge, particularly untreated or improperly treated wastewater, is a major source of water pollution, introducing harmful bacteria, nutrients, and chemicals into water bodies.

Conservation involves the careful management and use of resources to avoid waste and ensure their availability for future generations.

Selective fishing involves using techniques that minimize bycatch and target specific species, reducing the impact on marine ecosystems.