The concept of 'environmental carrying capacity' has long been central to ecological studies, yet its application to human societies remains contentious. Unlike non-human populations, which are typically limited by resource availability and predation, human communities can artificially augment their environment's productivity through technological innovation and trade. However, such adaptations often incur hidden costs, such as increased energy consumption and waste production. Recent research suggests that while technological fixes may temporarily raise the ceiling of carrying capacity, they simultaneously create new vulnerabilities, particularly in the face of global climate change. Consequently, some scholars argue for a more nuanced definition that incorporates not only biophysical limits but also social resilience and adaptive capacity. This perspective challenges the assumption that human ingenuity can indefinitely outpace environmental constraints, urging policymakers to consider long-term sustainability over short-term gains.
❓ According to the passage, what is a key limitation of technological innovations in increasing human carrying capacity?
A. A. They are often too expensive for developing countries to adopt.
B. B. They may lead to unintended consequences like higher energy use and waste.
C. C. They cannot address the issue of resource depletion in any way.
D. D. They are only effective when combined with population control measures.
✅ 正确答案
B. They may lead to unintended consequences like higher energy use and waste.
IELTS Reading Tips
Skim the questions first, underline keywords, then locate in the passage
Watch for paraphrasing; correct answers are often reworded
Be wary of absolute statements (all, always, never) — usually wrong
Pay attention to content after transition words (however, but, yet)
Manage time: about 20 minutes per passage; skip difficult questions first