Population growth has placed strains on our environment

Nature has a natural way of keeping itself in equilibrium There are natural cycles that regulate and maintain: Atmospheric conditions Soil conditions Waste removal Water quality

The quality of the atmosphere is regulated by photosynthesis and cellular respiration. CO2 and O2 levels are kept in balance

The quality of the atmosphere is regulated by photosynthesis and cellular respiration. CO2 and O2 levels are kept in balance Pollution from burning fuel (gas, oil, and coal) increases the amount of CO2 in the air

CO2 and O2 levels are kept in balance The quality of the atmosphere is regulated by photosynthesis and cellular respiration. CO2 and O2 levels are kept in balance Pollution from burning fuel (gas, oil, and coal) increases the amount of CO2 in the air Cars, factories

Waste removal is maintained by decomposers Decomposers recycle nutrients back into the soil. The soil is regenerated in cycles to keep it healthy for producers.

Waste removal is maintained by decomposers Decomposers recycle nutrients back into the soil. The soil is regenerated in cycles to keep it healthy for producers. Farming of a single crop reduces biodiversity and depletes nutrients in the soil faster than they can be regenerated.

Waste removal is maintained by decomposers Decomposers recycle nutrients back into the soil. The soil is regenerated in cycles to keep it healthy for producers. Farming of a single crop reduces biodiversity and depletes nutrients in the soil faster than they can be regenerated. Humans pollute the land with materials that cannot be decomposed Plastic, styrofoam

Water is purified through the water cycle. Freshwater is regenerated when it falls from clouds as rain.

Water is purified through the water cycle. Freshwater is regenerated when it falls from clouds as rain. Human air pollution is mixing in with clouds and affecting the pH level of rainwater.

Water is purified through the water cycle. Freshwater is regenerated when it falls from clouds as rain. Human pollution is mixing in with clouds and affected the pH level of rainwater. Acid rain

Human population growth is increasing exponentially. The more humans there are, the more resources we need.

Humans are affecting other organisms through our use of land and the pollution we create.

Land use decreases the space and resources that are available to other organisms. Humans have destroyed many habitats and ecosystems. Humans are decreasing the biodiversity of the natural world. Humans are affecting global stability

Ecosystems form gradually over time This process is called succession

Ecosystems form gradually over time This process is called succession Removing stable ecosystems is called deforestation.

Pollution changes the chemical composition of air, soil, and water. Factories and cars release air pollution. Increasing carbon dioxide levels are destroying the ozone layer of the atmosphere.

Air pollution and the destruction of our ozone layer is causing global warming

Air, Water, Soil, and Forests are renewable resources. This means that with time, nature can replenish these resources.

Industrialization Increase in technology and manufacturing Rapidly destroy, use, and produce resources. Requires a lot of materials Requires a lot of energy Gas, oil, coal

Fossil Fuels Gas, Oil, and Coal are fossil fuels They are called “fossil” fuels because they took thousands of years to naturally form Fossil fuels are finite Fossil fuels are nonrenewable Once fossil fuels are used up, they are gone forever

The Human Impact Pollution (air, water, soil) Deforestation Puts carbon dioxide in the air Global warming Acid Rain Deforestation Reduces biodiversity Destroys ecosystems Takes away resources from other organisms Industrialization Requires energy and fuel Fossils fuels are nonrenewable and cause pollution