Reading Comprehension — Set 11
Questions 101–110 of 120
Ecosystems deliver an enormous range of services that human societies depend upon, many of which are not captured in conventional market prices. Forests regulate water cycles, absorb carbon dioxide, and provide habitat for the species whose interactions underpin soil fertility. Wetlands filter pollutants, buffer coastlines against storms, and support fisheries that feed hundreds of millions of people. Pollinators, decomposers, and predators each contribute to agricultural productivity and landscape stability in ways that would cost trillions of dollars to replicate artificially. Natural systems therefore provide economic and ecological benefits supporting human survival, and their loss represents not merely an environmental concern but a direct threat to material welfare and civilisational resilience. What would be the best title for a complex passage about ecosystem services?
Correct Answer: B. Natural Systems Provide Economic and Ecological Benefits Supporting Human Survival
This title captures the passage's main focus on the interconnected nature of ecosystem services and their value. It encompasses both the biological and economic dimensions of natural system contributions. Mastering this concept helps in solving grammar-based questions in competitive.
The conventional industrial model treats resources as flowing in a single direction: raw materials are extracted, manufactured into products, used briefly, and then discarded as waste. This linear pattern generates enormous quantities of pollution and rapidly depletes finite natural stocks. An alternative framework, the circular economy, redesigns this flow so that materials remain in productive use for as long as possible through reuse, repair, remanufacturing, and recycling. A circular economy reduces waste by keeping resources in use through reuse, repair, and recycling, closing material loops that the linear model leaves permanently open. Proponents argue that this approach not only reduces environmental pressure but also creates economic value by transforming what was previously considered waste into productive input. Which main idea best summarizes a passage about circular economy principles?
Correct Answer: B. Circular economy reduces waste by keeping resources in use through reuse, repair, and recycling
This captures the core principle of circular economy. By designing products and processes to eliminate waste through continuous cycling of materials, societies can reduce environmental impact while creating economic value. Mastering this concept helps in solving grammar-based questions in competitive.
Over billions of years, living organisms have evolved extraordinarily efficient solutions to the challenges of surviving, moving, building structures, and processing energy. Engineers and designers have increasingly turned to these biological models for inspiration, a practice known as biomimicry. The aerodynamic contours of kingfisher beaks inspired quieter high-speed train noses; the adhesive properties of gecko feet informed the development of new bonding materials; the self-cleaning surface of the lotus leaf led to water-repellent coatings. Studying natural systems inspires human innovations that solve problems efficiently because evolution, acting across millions of generations, tends to converge on elegant solutions that minimise material and energy use. Biomimicry thus positions nature not as a resource to be exploited but as a library of proven design principles. What central concept emerges from a passage about biomimicry?
Correct Answer: B. Studying natural systems inspires human innovations solving problems efficiently
The passage suggests that nature provides proven models for sustainable design. Biomimicry applies millions of years of evolutionary optimization to address human challenges with minimal environmental impact. Mastering this concept helps in solving grammar-based questions in competitive.
Before industrialisation, most human societies organised production around agriculture, craft workshops, and local trade, with energy supplied by human and animal labour supplemented by wind and water. The industrial revolution transformed this picture, introducing mechanised factories, fossil fuel energy, and mass production capable of generating material goods on an unprecedented scale. Living standards for many rose substantially, and populations grew rapidly as food surpluses and medical advances cut mortality rates. However, industrialisation enabled increased production but created new environmental and social challenges: factory pollution, urban squalor, resource depletion, and the disruption of traditional communities and livelihoods. The history of industrial societies is therefore a story of profound gains accompanied by equally profound costs that continue to shape contemporary debates about development. What theme is explored in a passage comparing preindustrial and industrial societies?
Correct Answer: B. Industrialization enabled increased production but created new environmental and social challenges
The passage likely explores the complex tradeoffs between preindustrial and industrial organization. While industrialization increased material abundance, it created pollution, resource depletion, and social disruption. Mastering this concept helps in solving grammar-based questions in competitive.
Which inference best explains why indigenous knowledge systems are valuable?
Correct Answer: B. Indigenous practices developed over centuries sustainable relationships with local environments
The passage implies that indigenous communities' long-term presence required developing sustainable practices. Their accumulated knowledge often incorporates ecological principles ensuring long-term resource availability. Mastering this concept helps in solving grammar-based questions in competitive.
The history of human energy use reveals that transitions from one dominant energy source to another are rarely quick or simple. Moving from wood to coal required the construction of mines, railways, and industrial furnaces over the course of more than a century; the subsequent shift to oil and natural gas demanded an entirely new infrastructure of pipelines, refineries, and combustion engines. Today, the transition from fossil fuels to renewable energy sources such as solar and wind presents comparable challenges of scale and coordination. Moving from fossil fuels to renewables requires infrastructure investment, coordination, and time, as electricity grids must be redesigned, storage technologies developed, and workforce skills retrained to match the new energy landscape. Policy frameworks, international agreements, and sustained public investment are all essential to navigate this complex transformation. What does the passage suggest about energy transitions?
Correct Answer: B. Moving from fossil fuels to renewables requires infrastructure investment coordination and time
The passage indicates that energy system transformation is complex requiring technological innovation, infrastructure development, policy changes, and behavioral shifts, making rapid complete transitions challenging. This grammar rule is fundamental to constructing correct and meaningful English sentences Mastering this concept helps in solving grammar-based questions in competitive.
Carbon is one of the most versatile elements on Earth, cycling continuously between the atmosphere, oceans, soils, and living organisms through a set of interconnected chemical and biological processes. Plants absorb carbon dioxide from the atmosphere through photosynthesis, locking carbon into organic tissue; when organisms die and decompose, or when they are consumed by animals, much of that carbon is released back into the air as carbon dioxide or methane. For most of Earth's history, these flows were roughly balanced, keeping atmospheric carbon concentrations stable. However, the large-scale combustion of fossil fuels injects carbon that was stored underground for millions of years back into the atmosphere far faster than natural processes can reabsorb it. Understanding carbon movement through the atmosphere, ocean, and soil therefore explains climate change mechanisms, because the resulting rise in greenhouse gases drives the global warming observed over the past two centuries. Why might the passage discuss the carbon cycle in relation to climate?
Correct Answer: B. Understanding carbon movement through atmosphere, ocean, and soil explains climate change mechanisms
The passage implies that climate change fundamentally results from disrupting the carbon cycle. Burning fossil fuels releases stored carbon, overwhelming natural systems' capacity to reabsorb it. Mastering this concept helps in solving grammar-based questions in competitive.
By the middle of this century, projections suggest that nearly two-thirds of the world's population will live in urban areas, placing enormous pressure on infrastructure, water supplies, and energy systems. Many existing cities were built around assumptions of cheap fossil fuels and unlimited land, resulting in sprawling layouts that encourage car dependence and generate significant greenhouse gas emissions. Growing awareness of climate risk, resource limits, and urban heat island effects is prompting planners and policymakers to rethink how cities should be built and retrofitted. Future cities must integrate sustainability, reducing resource consumption and environmental impact through green roofs, public transit, renewable energy, and efficient building design. Those that successfully embed these principles will be better positioned to provide healthy, affordable, and resilient living conditions as environmental pressures intensify. What can be inferred about the future of urban development from the passage?
Correct Answer: B. Future cities must integrate sustainability reducing resource consumption and environmental impact
The passage suggests that as urbanization continues and environmental limits tighten, future development must incorporate green infrastructure renewable energy and efficient systems minimizing environmental footprint. Correct use of tense is essential to convey the right time frame and sequence of actions in English Mastering this concept helps in solving grammar-based questions in competitive.
As the global population grows and consumption per capita rises, several critical natural resources are being depleted or degraded at an accelerating rate. Freshwater aquifers in many agricultural regions are being drawn down faster than rainfall recharges them; easily accessible mineral deposits are becoming scarcer, raising extraction costs; and productive farmland is being lost to erosion, salinisation, and urban expansion. Historically, such constraints have spurred human ingenuity, driving the development of more efficient irrigation techniques, new materials, and higher-yielding crop varieties. Key resources becoming scarcer drives innovation and necessary social changes, compelling societies to discover substitutes, redesign production processes, and reorganise institutions around more sustainable principles. While scarcity creates hardship, it has also repeatedly served as the catalyst for transformative technological and social progress. Which conclusion about resource scarcity best reflects the passage?
Correct Answer: B. Key resources becoming scarcer drives innovation and necessary social changes
The passage implies that resource constraints motivate technological and social innovation. Water scarcity, mineral depletion, and limited arable land create pressures for efficiency improvements and alternative solutions. Mastering this concept helps in solving grammar-based questions in competitive.
Earth scientists have identified a set of biophysical thresholds — often called planetary boundaries — that collectively define a safe operating space for human civilisation. These boundaries encompass processes such as climate regulation, the integrity of the biosphere, freshwater cycles, nitrogen and phosphorus flows, and ocean acidification. Within these limits, natural systems can absorb shocks and recover from disturbances; beyond them, changes can become self-reinforcing and irreversible. Human activities must operate within ecological limits or face civilizational consequences, because crossing multiple boundaries simultaneously risks triggering abrupt transitions in Earth's systems that could fundamentally undermine agricultural productivity, freshwater availability, and the stability of human settlements. The planetary boundaries framework thus provides a scientific basis for defining what constitutes genuinely sustainable development. What central theme underlies the passage's discussion of planetary boundaries?
Correct Answer: B. Human activities must operate within ecological limits or face civilizational consequences
The passage indicates that Earth has finite regenerative and absorptive capacities. Exceeding critical thresholds in climate, biodiversity, nutrient cycling, or other systems risks triggering irreversible changes threatening human civilization. Mastering this concept helps in solving grammar-based questions in competitive.