Question

What are some signs that global warming is occurring?

Answer 1

Many signs are now apparent, including rising average annual temperature, sea level rise, and changing ecosystems.

Explanation:

The evidence that global warming is occurring is now overwhelming and includes:

• concentrations of greenhouse gases continue to rise causing the natural greenhouse effect to be enhanced.
• as a result, average Earth's temperature is continuing to rise
• warmer air means the ocean waters are expanding, glaciers are melting and this is raising global sea levels.
• the big ice sheets, and smaller ones, are melting back.
• average ocean temperatures are rising (heat from the atmosphere gets transferred to the oceans).
• oceans becoming more acidic as excess CO2 from the air is absorbed into the oceans.
• spring is arriving earlier around the world
• rainfall distribution patterns are changing.
• more frequent heat waves are occurring
• see pic.....