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Environment Vocabulary

Climate change, pollution, conservation, and sustainability โ€” essential vocabulary for IELTS Writing Task 2 and Speaking Part 3.

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15 wordsยทBand 5: 3Band 6: 4Band 7: 5Band 8: 3

pollution

nounBand 5
writingspeakingreading

The introduction of harmful substances into the natural environment

โ€œAir pollution in major cities has reached dangerous levels in recent years.โ€
air pollutionwater pollutionreduce pollutioncause pollution

renewable energy

noun phraseBand 5
writingspeaking

Energy from sources that are naturally replenished, such as wind or solar power

โ€œGovernments must invest heavily in renewable energy to combat climate change.โ€
renewable energy sourcesinvest in renewable energyswitch to renewable energy

deforestation

nounBand 5
writingreading

The large-scale clearing of forests, typically for agriculture or urban development

โ€œDeforestation in the Amazon threatens thousands of plant and animal species.โ€
rampant deforestationhalt deforestationdeforestation ratecombat deforestation

carbon emissions

noun phraseBand 6
writingspeaking

The release of carbon dioxide into the atmosphere, primarily from burning fossil fuels

โ€œReducing carbon emissions is central to every national climate strategy.โ€
cut carbon emissionscarbon emissions targetreduce carbon emissionscarbon emissions per capita

biodiversity

nounBand 6
writingreading

The variety of plant and animal life in a particular habitat or on Earth as a whole

โ€œUrban expansion continues to erode biodiversity in coastal wetlands.โ€
protect biodiversityloss of biodiversityrich in biodiversitybiodiversity hotspot

sustainability

nounBand 6
writingspeakingreading

The ability to maintain processes without depleting natural resources or harming the environment

โ€œCorporations are under increasing pressure to demonstrate environmental sustainability.โ€
long-term sustainabilityenvironmental sustainabilitypromote sustainabilitysustainability goals

greenhouse gas

noun phraseBand 6
writingreading

A gas that traps heat in the atmosphere, contributing to the greenhouse effect and global warming

โ€œMethane is a potent greenhouse gas released by livestock farming.โ€
greenhouse gas emissionsreduce greenhouse gasesgreenhouse gas concentration

ecological footprint

noun phraseBand 7
writingspeaking

A measure of the environmental impact of an individual or community based on resource consumption

โ€œAdopting a plant-based diet is one of the most effective ways to reduce your ecological footprint.โ€
reduce ecological footprintmeasure ecological footprintlarge ecological footprint

mitigation

nounBand 7
writingreading

Action taken to reduce the severity or impact of a problem, especially climate change

โ€œClimate mitigation strategies must be implemented alongside adaptation measures.โ€
climate mitigationmitigation strategymitigation measuresrisk mitigation

habitat destruction

noun phraseBand 7
writingreading

The process by which a natural habitat is made unable to support the species that live there

โ€œHabitat destruction remains the primary driver of species extinction worldwide.โ€
widespread habitat destructioncaused by habitat destructionprevent habitat destruction

carbon footprint

noun phraseBand 7
writingspeaking

The total amount of greenhouse gases produced by an individual, organisation, or activity

โ€œAirlines are under pressure to offset their considerable carbon footprint.โ€
reduce carbon footprintcalculate carbon footprintlarge carbon footprintcarbon footprint offset

sequestration

nounBand 7
writingreading

The process of capturing and storing atmospheric carbon dioxide in natural sinks such as forests or oceans

โ€œReforestation programmes support carbon sequestration on a significant scale.โ€
carbon sequestrationsequestration of CO2natural sequestration

anthropogenic

adjectiveBand 8
writingreading

Originating in human activity, particularly with reference to environmental change

โ€œThe scientific consensus is that current global warming is primarily anthropogenic.โ€
anthropogenic climate changeanthropogenic emissionsanthropogenic factors

ecosystem services

noun phraseBand 8
writingreading

The benefits that humans derive from functioning ecosystems, such as clean water, pollination, and climate regulation

โ€œThe economic value of ecosystem services provided by mangroves is often overlooked.โ€
value of ecosystem servicesloss of ecosystem servicesecosystem services framework

decarbonisation

nounBand 8
writingreading

The process of reducing the carbon dioxide output of a country, industry, or activity

โ€œRapid decarbonisation of the energy sector is essential to meeting net-zero targets.โ€
decarbonisation pathwayaccelerate decarbonisationenergy sector decarbonisation

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