| Question | Answer |
|---|---|
| the variety of plant and animal life in a particular habitat or the world | biodiversity The loss of biodiversity threatens the stability of ecosystems around the globe. |
| the ability to maintain ecological balance without depleting natural resources | sustainability Sustainability has become a central concern in urban planning and development policy. |
| the clearing or removal of forests or trees from land | deforestation Deforestation in the Amazon basin has accelerated at an alarming rate in recent decades. |
| a biological community of interacting organisms and their physical environment | ecosystem Coral reefs are among the most diverse and productive ecosystems on the planet. |
| the production and discharge of gases or radiation into the atmosphere | emissions Reducing carbon emissions is critical to mitigating the effects of climate change. |
| the protection and preservation of natural environments and wildlife | conservation Conservation efforts have helped prevent the extinction of several endangered species. |
| relating to a resource that is naturally replenished and not depleted when used | renewable Investment in renewable energy sources such as wind and solar has grown substantially. |
| the introduction of harmful substances or contaminants into the environment | pollution Air pollution in major cities has been linked to a range of respiratory diseases. |
| the natural home or environment of an animal, plant, or other organism | habitat Habitat destruction is one of the primary causes of species decline worldwide. |
| the permanent disappearance of a species from the earth | extinction Scientists warn that the current rate of extinction is far higher than the natural background rate. |
| the plants of a particular region, habitat, or geological period | flora The tropical rainforest contains an extraordinarily rich diversity of flora. |
| the animals of a particular region, habitat, or geological period | fauna The island's unique fauna evolved in isolation over millions of years. |
| the gradual wearing away of soil or rock by wind, water, or other natural agents | erosion Coastal erosion poses a serious threat to communities living near the shoreline. |
| a prolonged period of abnormally low rainfall leading to water shortage | drought Severe drought has devastated agricultural output in several African nations. |
| rain, snow, sleet, or hail that falls to the ground | precipitation Changes in precipitation patterns can have significant impacts on agriculture and water supply. |
| relating to heat generated from within the earth | geothermal Iceland relies heavily on geothermal energy to heat homes and generate electricity. |
| produced or involving production without the use of chemical fertilisers or pesticides | organic The demand for organic produce has increased as consumers become more health-conscious. |
| to make impure by exposure to or addition of a poisonous or polluting substance | contaminate Industrial waste can contaminate rivers and groundwater supplies. |
| to use up the supply or resources of something | deplete Overfishing continues to deplete fish stocks in many of the world's oceans. |
| the deterioration or decline in quality or condition of the environment | degradation Environmental degradation resulting from industrial activity has affected public health. |
| the process of replanting trees in areas where forests have been cleared | reforestation Reforestation programmes aim to restore degraded land and increase carbon absorption. |
| the process by which fertile land becomes desert, often due to climate change or overuse | desertification Desertification threatens the livelihoods of millions of people in sub-Saharan Africa. |
| relating to gases in the atmosphere that trap heat and warm the earth's surface | greenhouse The greenhouse effect is intensified by the burning of fossil fuels. |
| a chemical element that forms the basis of all known life and is a major component of emissions | carbon Reducing one's carbon footprint is an important step towards environmental responsibility. |
| an underground layer of rock or sediment that holds groundwater | aquifer Over-extraction from the aquifer has led to a significant drop in the water table. |
| an area of land that is saturated with water, such as a marsh or swamp | wetland Wetlands play a vital role in filtering water and providing flood protection. |
| the process by which plants convert sunlight into energy | photosynthesis Photosynthesis is fundamental to life on earth as it produces oxygen and absorbs carbon dioxide. |
| plants considered collectively, especially those found in a particular area | vegetation Dense vegetation along riverbanks helps prevent soil erosion and maintain water quality. |
| the layer of gases surrounding the earth | atmosphere The accumulation of greenhouse gases in the atmosphere is driving global temperature increases. |
| the arrangement of the natural and physical features of an area of land | topography The region's topography, with its steep mountains and deep valleys, influences local weather patterns. |
| relating to earthquakes or other vibrations of the earth | seismic Seismic activity in the region has increased, raising concerns about potential earthquakes. |
| a long high sea wave caused by an earthquake or other disturbance | tsunami The 2004 tsunami in the Indian Ocean caused widespread devastation across coastal communities. |
| a mass of snow, ice, and rocks falling rapidly down a mountainside | avalanche Climate change has increased the frequency and unpredictability of avalanches in alpine regions. |
| a storm with violent wind, particularly in the western Atlantic Ocean | hurricane The intensity of hurricanes is expected to increase as ocean temperatures rise. |
| a thick layer of soil that remains frozen throughout the year | permafrost Thawing permafrost releases methane, a potent greenhouse gas, into the atmosphere. |
| a vast, flat, treeless arctic region where the subsoil is permanently frozen | tundra The tundra ecosystem is particularly vulnerable to the effects of global warming. |
| relating to the region between the tropics, characterised by warm temperatures | tropical Tropical rainforests are home to more than half of the world's plant and animal species. |
| relating to a climate with mild temperatures, between tropical and polar | temperate Temperate forests undergo seasonal changes that affect the entire food chain. |
| an area of land that drains all rainfall into a common outlet such as a river | watershed Protecting the watershed is essential for maintaining clean drinking water supplies. |
| a slowly moving mass of ice formed from compacted snow on mountains or near the poles | glacier Glaciers around the world are retreating at an unprecedented rate due to rising temperatures. |
| a form of oxygen that forms a protective layer in the upper atmosphere | ozone The depletion of the ozone layer has increased the risk of skin cancer from ultraviolet radiation. |
| marine organisms that form large underwater structures called reefs | coral Rising ocean temperatures have caused widespread coral bleaching across tropical waters. |
| decayed organic material used as fertiliser for growing plants | compost Composting kitchen waste reduces landfill contributions and enriches garden soil. |
| to convert waste into reusable material | recycle Governments are encouraging citizens to recycle plastics, paper, and glass to reduce waste. |
| the preserved remains of a prehistoric organism embedded in rock | fossil The discovery of marine fossils on mountain tops provides evidence of geological change over time. |
| at serious risk of extinction | endangered The giant panda was classified as endangered for decades before conservation efforts improved its status. |
| the illegal hunting or capturing of wild animals | poaching Poaching remains a significant threat to elephant and rhinoceros populations in Africa. |
| the establishment of a forest on land that was not previously forested | afforestation Afforestation projects can help absorb carbon dioxide and combat climate change. |
| having little or no rain; very dry | arid Arid regions require innovative water management strategies to support agriculture. |
| capable of being decomposed by bacteria or other living organisms | biodegradable Using biodegradable packaging helps reduce the amount of plastic waste in landfills. |
| organic matter used as a fuel or energy source | biomass Biomass energy is considered renewable because it comes from recently living organisms. |
| the uppermost layer of branches and leaves in a forest | canopy The forest canopy provides shelter and food for a vast array of species. |
| an animal that feeds on other animals | carnivore Large carnivores such as wolves play a crucial role in regulating prey populations. |
| an animal that feeds only on plants | herbivore Herbivores such as deer and rabbits are essential components of many food chains. |
| an animal that eats both plants and animals | omnivore Humans are omnivores, capable of deriving nutrition from a wide variety of food sources. |
| the long-term pattern of weather conditions in a particular area | climate Global climate models predict significant temperature increases over the coming decades. |
| the conversion of vapour or gas to liquid, usually on a cool surface | condensation Condensation is a key stage in the water cycle that leads to cloud formation and precipitation. |
| the process of turning from liquid into vapour | evaporation Increased evaporation due to higher temperatures can intensify the water cycle. |
| the supply of water to land or crops through artificial channels | irrigation Efficient irrigation techniques are essential for farming in water-scarce regions. |
| a microscopic organism, especially a bacterium, virus, or fungus | microorganism Soil microorganisms play a vital role in nutrient cycling and maintaining soil health. |
| a substance used for destroying insects or organisms harmful to cultivated plants | pesticide The overuse of pesticides has been linked to a decline in pollinator populations. |
| matter that settles to the bottom of a liquid; material deposited by water or wind | sediment River sediment carried downstream can build up and form deltas at the coast. |
| fine sand, clay, or other material carried and deposited by running water | silt Excessive silt in waterways can smother aquatic habitats and reduce water quality. |
| fog or haze combined with smoke and chemical pollutants | smog Dense smog in urban centres has been linked to increased hospital admissions for respiratory illness. |
| able to be dissolved in a liquid, especially water | soluble Soluble fertilisers can leach into groundwater and cause contamination. |
| a stretch of land with regard to its physical features | terrain The rugged terrain of the region makes it difficult to build transport infrastructure. |
| a mountain or hill with a crater through which lava and gases are discharged | volcano Volcanic eruptions can have both devastating local effects and global climate consequences. |
| fruit blown down from a tree by the wind, or an unexpected gain or benefit | windfall The policy change proved to be a windfall for environmental conservation organisations. |
| the amount of a crop or product produced | yield Agricultural yield has increased due to advances in farming technology and irrigation. |
| liquid waste or sewage discharged into a river or the sea | effluent Strict regulations now control the discharge of industrial effluent into waterways. |
| a river or stream flowing into a larger river or lake | tributary Pollution in a single tributary can affect the water quality of an entire river system. |
| the tidal mouth of a large river where it meets the sea | estuary Estuaries are highly productive ecosystems that serve as nurseries for many fish species. |
| an enclosed environment that replicates a natural habitat | biodome The biodome allows researchers to study tropical ecosystems in a controlled setting. |
| native to and found only in a particular region or environment | endemic Many endemic species on isolated islands are especially vulnerable to habitat destruction. |
| tending to spread and cause damage in a new environment where it is not native | invasive Invasive species can outcompete native organisms and disrupt local ecosystems. |
| to make less severe or serious | mitigate Planting trees along coastlines can mitigate the impact of storm surges and flooding. |
| to isolate or capture, especially to remove carbon dioxide from the atmosphere | sequester Forests sequester large amounts of carbon, helping to offset industrial emissions. |
| containing or impregnated with salt | saline Rising sea levels can introduce saline water into freshwater aquifers, making them unusable. |
| to break down or deteriorate in quality or condition | degrade Plastic waste takes hundreds of years to degrade in the natural environment. |
| involving a close and long-term interaction between two different organisms | symbiotic The symbiotic relationship between bees and flowering plants is essential for pollination. |
| originating or occurring naturally in a particular place; native | indigenous Indigenous plant species are better adapted to local conditions and require less water. |
| relating to or living in water | aquatic Aquatic ecosystems are among the most threatened by pollution and climate change. |
| relating to the earth or dry land | terrestrial Terrestrial habitats have been significantly altered by urbanisation and agriculture. |
| relating to or found in the sea | marine Marine conservation zones have been established to protect vulnerable ocean habitats. |
| an agent that carries pollen from one plant to another, enabling fertilisation | pollinator The decline in pollinator populations threatens global food security. |
| the regions of the earth's surface and atmosphere occupied by living organisms | biosphere Human activity is having a profound and measurable impact on the biosphere. |
| the rigid outer part of the earth, consisting of the crust and upper mantle | lithosphere The lithosphere is divided into tectonic plates that move slowly over geological time. |
| all the water on, under, and above the surface of the earth | hydrosphere Changes in the hydrosphere, such as melting ice caps, directly affect sea levels. |
| the layer of the atmosphere above the troposphere, containing the ozone layer | stratosphere Volcanic eruptions can inject particles into the stratosphere that temporarily cool the planet. |
| responsible travel to natural areas that conserves the environment | ecotourism Ecotourism generates revenue for local communities while promoting wildlife conservation. |
| the cultivation of a single crop in a given area | monoculture Monoculture farming can deplete soil nutrients and increase vulnerability to disease. |
| excessive nutrient enrichment in water bodies causing algal blooms | eutrophication Eutrophication caused by agricultural runoff has created dead zones in coastal waters. |
| the minimum level of food and resources needed to survive | subsistence Subsistence farming provides enough food for the farmer's family but little surplus for sale. |
| a poisonous substance produced by living organisms or released by human activity | toxin Environmental toxins can accumulate in the food chain, posing risks to predators at the top. |
| a substance capable of causing cancer | carcinogen Several industrial chemicals have been identified as carcinogens and banned from consumer products. |
| land that has been ploughed but left unseeded for a period to restore its fertility | fallow Leaving fields fallow periodically helps replenish soil nutrients naturally. |
| safe to drink; clean enough for human consumption | potable Access to potable water remains a critical challenge in many developing countries. |
| relating to or living in trees | arboreal Arboreal species such as orangutans are particularly threatened by deforestation. |
| relating to or consisting of material deposited by running water | alluvial The alluvial plains along the river are among the most fertile agricultural lands in the region. |
| shedding leaves annually, typically in autumn | deciduous Deciduous forests display dramatic seasonal colour changes as leaves turn before falling. |
| relating to trees that bear cones and have needle-like leaves | coniferous Coniferous forests dominate the boreal regions of the northern hemisphere. |
| a severe flood or a heavy downpour of rain | deluge The deluge caused widespread flooding, displacing thousands of residents. |
| the process of extreme drying or removal of moisture | desiccation Desiccation of wetlands has led to the loss of critical bird breeding grounds. |
| active during the night | nocturnal Many nocturnal species are affected by light pollution from urban areas. |
| an animal that naturally preys on others | predator Apex predators help maintain ecological balance by controlling herbivore populations. |
| an animal that feeds on dead or decaying organic matter | scavenger Scavengers such as vultures play a crucial ecological role in removing carcasses from the landscape. |
| tending to move from one region to another with the change of seasons | migratory Migratory birds depend on a network of wetlands for rest stops during their long journeys. |
| to spend the winter in a dormant state | hibernate Bears hibernate during winter months, relying on stored body fat for energy. |
| a brown deposit of partly decomposed plant material formed in acidic boggy ground | peat Peat bogs store vast amounts of carbon, and their destruction releases it into the atmosphere. |
| a tree or shrub that grows in coastal saline or brackish water | mangrove Mangrove forests protect coastlines from erosion and provide nursery habitats for fish. |
| a grassy plain with few trees in tropical and subtropical regions | savanna The African savanna supports large populations of grazing animals and their predators. |
| a large area of flat grassland with few trees, especially in eastern Europe and Asia | steppe The Eurasian steppe has historically been home to nomadic pastoral communities. |
| a group of islands clustered together in a body of water | archipelago The archipelago is home to a remarkable diversity of unique plant and animal species. |
| a piece of land almost surrounded by water or projecting into a body of water | peninsula The peninsula's coastal wetlands are an important breeding ground for seabirds. |
| a large flat area of land that is higher than the surrounding land | plateau The high plateau receives very little rainfall, creating semi-arid conditions. |
| a deep, narrow gorge with steep sides | ravine Rapid water flow through the ravine has accelerated erosion of the surrounding landscape. |
| a narrow valley between hills or mountains, typically with steep rocky walls | gorge The river carved a deep gorge through the limestone over millions of years. |
| a triangular area of land formed at the mouth of a river by deposited sediment | delta River deltas are among the most fertile and densely populated regions in the world. |
| a long, narrow inlet with steep sides, created by glacial erosion | fjord The fjords of Norway attract millions of tourists who come to admire their dramatic landscapes. |
| a shallow body of water separated from the sea by a sandbank or coral reef | lagoon The lagoon's warm, sheltered waters provide an ideal habitat for juvenile marine species. |
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