2The 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
3AIR POLLUTION LEADS TO… GLOBAL WARMINGOZONE DEPLETIONACID RAIN (WHEN CHEMICALS IN THE AIR COMBINE WITH RAIN)
4Things 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)
52. 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.
63. PesticidesThese chemicals are used by farmers to kill insects that destroy crops.
7What can we do???1. Conservation – the careful use of resources so that they are not wasted