1. An Environmental Balance

2. The Four Spheres of the Earth
Atmosphere – blanket of gases surrounding the earth
Lithosphere – earth’s hard outer shell (the land)
Hydrosphere – all the water in oceans, lakes, rivers, and glaciers
Biosphere – all living things and the environment where they live

3. AIR POLLUTION LEADS TO…
GLOBAL WARMING
OZONE DEPLETION
ACID 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, animal
and insect species every single day due to rainforest deforestation. That equates to 50,000 species a year. “ (rain-tree.com)

5. 2. Irrigation
Farmers 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. Pesticides
These 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