Human Impact on the Biosphere

Human Impact on the Biosphere 7 Billion People https://www.youtu be.com/watch?v=sc 4HxPxNrZ0 How did we get so big so fast? https://www.youtu be.com/watch?v=V cSX4ytEfcE

Humans in the Biosphere Humans depend on Earth’s nutrients and Energy cycles. We use the Earth to power our: TV Lights Cars Airplanes Our homes & cities The T-shirt we wear and the paper we write on comes from plants that need the Earth’s cycles.

Humans in the Biosphere How are we part of Earth’s Energy & Nutrient cycles? The way we use resources and produce waste affects Earth’s energy & nutrients cycle.

Humans in the Biosphere Technologies developed by humans have allowed for continued human population growth. Developments in Agriculture, Medicine and Transportation have increased the number of people the earth can support.

Humans in the Biosphere How many people can Earth hold? Where is the carrying capacity? One thing is for sure; the Earth can not hold an unlimited amount of people…

Humans in the Biosphere Agriculture Development of gas powered equipment Produce great amount of food Medicine Lowered infant deaths Limited the spread of disease Transportation Trains, trucks, boats & airplanes move food & materials around the world

Pressure on Earth’s natural resources Over million of years, natural processes change dead organisms into substances that we use today as oil & coal. Energy Usage These are NONrenewable resources We use them much faster than they form!!! Renewable resources Can not be used up or Can be replaced as fast as they are used

Nonrenewable & Renewable Resources Wood ?? Drinking Water ?? Metal ?? Soil ?? Wind ?? Natural Gas?? The number of people Earth can support depends on how resources are used! The US uses more resources and produces more waste than any other country on Earth.

Ecological Footstep https://www.youtube.com/watch?v=fACkb2 u1ULY

Human Impact on Air Pollution Humans in the Biosphere

How have humans contributed to the destruction of ecosystems?

Have humans caused acid rain?

What happened to the ozone layer?

Causes and Effects of Air Pollution Global Warming Caused by an increase in the amount of carbon dioxide in the atmosphere Effects include increase in earth’s temperature, bizarre weather patterns, melting of polar ice caps Causes and Effects of Air Pollution

Global Warming Let’s take a closer look at the Green House Effect … https://www.youtu be.com/watch?v=oJ AbATJCugs

Global Warming

Causes and Effects of Air Pollution Acid Rain (pH = 5.6) Caused by the release of sulfur dioxide and nitrogen oxide from factories Effects include soil erosion, death of animals and vegetation, erosion of buildings Causes and Effects of Air Pollution

Causes and Effects of Air Pollution Ozone Depletion Caused by the use of coolants and aerosol cans Effects include increased UV radiation, skin cancer and eye disorders Causes and Effects of Air Pollution

The Public Policy Act (PPA) Look at each slide and identify 3 things: 1) Define the Problem 2) Gather the Evidence 3) Identify the Causes The Public Policy Act (PPA)

Problem? Evidence?

Problem? Evidence?

Problem? Evidence?

Problem? Evidence?

Problem? Evidence?

Problem? Evidence?

Problem? Evidence?

Problem? Evidence?

Problem? Evidence?

Problem? Evidence?

At the conclusion of the PowerPoint presentation, each student will create his or her own Public Policy Act that our people in our city can follow to reduce air pollution Create Your Own PPA

ALL steps of the PPA must be addressed in this assignment: Define the Problem Gather Evidence State the Cause Students must also include an educational poster or brochure to increase air pollution awareness in our city Create Your Own PPA

Humans in the Biosphere

Threats to Biodiversity https://www.youtube.com/watch?v=L3QgCLyxvn4 Helping the World by conserving Biodiversity 11 min. https://www.youtube.com/watch?v=lAgpxszo094 25 Endangered Species 11 min

https://www.youtube.com/watch?v=uQ91AxUqHck Plant Earth 100 million years in the future 50 min.