1. Greenhouse Effect Natural Event Gases Trap Heat In Close To The Earth
Greenhouse Gases
Natural Event
Gases Trap Heat In Close To The Earth
Without these the Earth would be too cold for life.
But…you don’t want too much of a good thing
Naturally Occurring Greenhouse Gases
Water Vapor
Carbon Dioxide

2. Too Many Greenhouse Gases Cause Global Warming
Too many of these can increase temperatures around the globe.
Human’s have increased greenhouse gas emissions.
Increase in fossil fuel burning; Cars and Electricity
Almost Everything that Requires Energy emits Greenhouse Gases

3. Is It Really Happening? YES!!!
Scientists agree that global warming is occurring
….How Do We Know?
Temperatures have increased significantly over the past 200 yrs.
Earlier timing of spring events
Upward shifts in plant and animal ranges
Rise In Sea Levels
Global Warming Is Linked to Human Activities