Flexi Says: As Earth has gotten warmer, sea ice has melted. This has raised the level of water in the oceans about 3 mm per year. Other effects of global warming include more extreme weather. Earth now has more severe storms, floods, heat waves, and droughts than it did just a few decades ago. Many living things cannot adjust to the changing climate. Coral reefs in many parts of the world are struggling to survive. Species are moving uphill where temperatures are cooler. Those at the top of the mountain are being run off. Migration and egg-laying behaviors in birds are off of their normal.