(of an object) able to be broken down by living organisms such as bacteria, which is then safe for the environment

describing a state in which the carbon dioxide emission reaches zero or there is a balance between the amount of carbon dioxide emitted and absorbed

(of a vehicle) not producing gases harmful to the environment

(of natural substances such as oil) unprocessed and in raw form

related to a type of farming in which animals and birds can move around and eat freely, instead of being kept in a limited area

a feeling of great worry regarding the current and future state of the environment threatened by humans

the act of cutting down trees to use their wood

an odorless, colorless, and poisonous gas that is produced from the burning of fossil fuels, which proves lethal in some cases

very small plastic pieces in the environment that originate from personal care products, clothing, etc. and the degradation of other plastic products

a tall metal structure used for carrying high-voltage power lines above the ground

a large machine or structure used for producing nuclear energy

a layer of gases in the earth's atmosphere that does not let the sun's ultraviolet radiation pass through

the number of people who have died or gotten injured because of a war, natural disaster, pandemic, etc.

a very large ocean wave caused by a storm or an underwater earthquake that when hits the land causes a lot of destruction

a chemical substance that kills plants, used for destroying plants that are not wanted

any substance that is harmful to the environment

the process of of being destroyed via natural causes