2 The Four Spheres of the Earth Atmosphere – blanket of gases surrounding the earthLithosphere – earth’s hard outer shell (the land)Hydrosphere – all the water in oceans, lakes, rivers, and glaciersBiosphere – all living things and the environment where they live
3 AIR POLLUTION LEADS TO… GLOBAL WARMINGOZONE DEPLETIONACID RAIN (WHEN CHEMICALS IN THE AIR COMBINE WITH RAIN)
4 Things people do that are not good for the environment Deforestation – cutting trees down and not replanting them“Experts estimates that we are losing 137 plant, animaland insect species every single day due to rainforest deforestation. That equates to 50,000 species a year. “ (rain-tree.com)
5 2. IrrigationFarmers use irrigation to bring water to their plants. (As much as 70% of all water used on earth is for farming.) Many irrigation practices are wasteful.
6 3. PesticidesThese chemicals are used by farmers to kill insects that destroy crops.
7 What can we do???1. Conservation – the careful use of resources so that they are not wasted