Daily Current Affairs Quiz: August 08, 2025

Option (a) is correct: WMO releases the annual State of Global Climate Report highlighting global climate trends, extreme events, and related impacts.

Option (b) is incorrect: IPCC issues Assessment Reports and Special Reports on climate science, not the State of Global Climate Report.

Option (c) is incorrect: The United Nations Environment Programme works on environmental sustainability but does not publish the State of Global Climate Report.

Option (d) is incorrect: G20 is an economic forum of major economies and does not produce climate-specific annual reports like this one.

Statement 1 is incorrect: The greenhouse effect is primarily a natural process that helps maintain Earth’s temperature by trapping heat in the atmosphere. While human activities have intensified it, making it an anthropogenic concern, its origin is not exclusively human-caused.

Statement 2 is incorrect: The greenhouse effect occurs continuously, both during the day and night. Even without sunlight, greenhouse gases trap infrared radiation emitted by Earth’s surface, preventing excessive heat loss and maintaining a relatively stable global temperature cycle.

Statement 1 is correct: Dry weather and strong winds create ideal conditions for wildfires by drying vegetation and helping flames spread rapidly over large areas.

Statement 2 is correct: Lightning strikes can ignite wildfires, especially in forests or grasslands with dry vegetation, making it a natural cause of such fires.

Statement 3 is correct: Volcanic eruptions can cause wildfires when hot lava, ash, and pyroclastic flows ignite surrounding vegetation.

Statement 4 is incorrect: Sea level rise is a climate change impact but has no direct role in initiating or spreading wildfires.

Statement 1 is incorrect: Ocean acidification occurs due to an increase, not a decrease, in dissolved CO₂. Higher CO₂ levels form carbonic acid, lowering ocean pH.

Statement 2 is correct: Eutrophication from nutrient runoff increases decomposition, releasing CO₂ into seawater, which contributes to acidification.

Statement 3 is correct: Acid rains lower the pH of surface ocean waters when acidic precipitation mixes with seawater, adding to ocean acidification.

Statement 1 is correct: Increased ocean acidity can lower the metabolic rate of some marine organisms, reducing growth, reproduction, and survival rates, especially in sensitive species like shellfish and certain plankton.

Statement 2 is correct: Ocean acidification reduces carbonate ion availability, which is essential for shell and skeleton formation in calcifying organisms such as corals, mollusks, and some plankton species.