The Environment and Sustainability Flashcards
7 cards from real BECE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 The Environment and Sustainability flashcards as text
What is the main environmental concern associated with plastic waste in oceans?
Answer: It harms marine life through ingestion and entanglement
Marine animals often ingest or become entangled in plastic debris, leading to injury, illness, and death.
Which layer of the atmosphere protects Earth from harmful ultraviolet radiation?
Answer: Stratosphere ozone layer
The ozone layer in the stratosphere absorbs most of the sun's harmful UV-B and UV-C radiation before it reaches Earth's surface.
What does 'biodiversity' refer to?
Answer: The variety of life forms in a given area or on Earth as a whole
Biodiversity encompasses the variety of species, ecosystems, and genetic diversity found in a particular region or on the entire planet.
Which of the following activities contributes most to water pollution?
Answer: Releasing untreated industrial and sewage waste into rivers
Discharging untreated sewage and industrial effluents into water bodies introduces toxic chemicals and pathogens that severely pollute water.
What is the 'three Rs' approach to waste management?
Answer: Reduce, Reuse, Recycle
The three Rs—Reduce, Reuse, Recycle—form a hierarchy of waste management strategies aimed at minimizing environmental impact.
What happens to coral reefs when ocean temperatures rise significantly?
Answer: They undergo coral bleaching and may die
Rising ocean temperatures cause corals to expel the algae living in their tissues, leading to coral bleaching and eventual death if stress continues.
Which of the following gases is the most significant contributor to the enhanced greenhouse effect?
Answer: Carbon dioxide (CO2)
Carbon dioxide, released mainly by burning fossil fuels and deforestation, is the primary driver of the enhanced greenhouse effect and global warming.