Environment & Climate Change

The environment and climate change are among the most frequently tested topics in IELTS. You may encounter them in Writing Task 2, Speaking Part 3, and especially in Reading passages. A strong environmental vocabulary allows you to discuss complex issues with precision and sophistication.

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Core Vocabulary

Climate and Weather

Word / Phrase	Definition	Example
climate change	Long-term shifts in global temperatures and weather patterns	Climate change poses an existential threat to low-lying island nations.
global warming	The gradual increase in Earth's average temperature	Global warming is primarily driven by the burning of fossil fuels.
greenhouse gases	Gases (CO₂, methane) that trap heat in the atmosphere	Reducing greenhouse gas emissions is the most urgent environmental priority.
carbon footprint	The total amount of CO₂ produced by an individual or organisation	Consumers can reduce their carbon footprint by choosing sustainable products.
carbon-neutral	Achieving net-zero carbon dioxide emissions	Several nations have pledged to become carbon-neutral by 2050.
emissions	Gases or pollutants released into the atmosphere	Industrial emissions have increased significantly since the 1950s.
drought	A prolonged period of abnormally low rainfall	Severe droughts have led to food shortages in sub-Saharan Africa.
heatwave	An extended period of excessively hot weather	Heatwaves are becoming more frequent and intense as a result of climate change.

Pollution and Waste

Word / Phrase	Definition	Example
air quality	The cleanliness of the air we breathe	Air quality in many major cities has deteriorated significantly.
contamination	The presence of harmful substances in the environment	Industrial waste has led to widespread water contamination.
deforestation	The clearing of forests on a large scale	Deforestation in the Amazon threatens global biodiversity.
landfill	A site for the disposal of waste by burial	Reducing the amount of waste sent to landfill is a key environmental goal.
single-use plastic	Plastic designed to be used once and discarded	Many countries have introduced bans on single-use plastics.
biodegradable	Capable of being decomposed by natural processes	Consumers are increasingly demanding biodegradable packaging.
toxic waste	Poisonous waste materials from industry	The improper disposal of toxic waste has devastating consequences for ecosystems.

Conservation and Solutions