Topic 3: Ecology and urban Systems Quiz

Which gas is the most abundant in Earth's atmosphere?

• Oxygen

• Carbon dioxide

• Nitrogen

• Methane

What is the primary cause of the enhanced greenhouse effect?

• Increased volcanic activity

• Human emissions of greenhouse gases

• Natural fluctuations in solar radiation

• Ocean acidification

Which human activity contributes most significantly to rising atmospheric CO₂?

• Deforestation

• Burning fossil fuels

• Industrial wastewater

• Nuclear power

What is the main function of the ozone layer?

• Trap heat to warm the Earth

• Filter ultraviolet (UV) radiation

• Produce oxygen for respiration

• Absorb carbon dioxide

Which of the following is a positive feedback loop in climate change?

• Increased cloud cover reflecting sunlight

• Melting permafrost releasing methane

• Reforestation absorbing CO₂

• Ocean currents distributing heat

Which international agreement aims to limit global warming to 1.5°C above pre-industrial levels?

• Kyoto Protocol

• Paris Agreement

• Montreal Protocol

• Basel Convention

What is the albedo effect?

• Absorption of heat by greenhouse gases

• Reflection of solar radiation by ice/snow

• Release of methane from wetlands

• Oceanic uptake of CO₂

Which sector is the largest contributor to global methane emissions?

• Transportation

• Agriculture (livestock & rice paddies)

• Industrial manufacturing

• Waste incineration

In an ecosystem, energy flow is best described as:

• Cyclic

• Linear and one-way

• Recycled indefinitely

• Stored in detritus

What are the winds found underneath the Ferrel Cells?

• Westerly trade winds

• Easterly trade winds

• High pressure winds

• Tradewar winds