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Population Resources Pollution Minimize Your Impact Miscellaneous 10 Point 20 Points 30 Points 40 Points 50 Points 10 Point 20 Points 30 Points 40 Points 50 Points 30 Points 40 Points 50 Points Resources 2

What has happened to the human population over the course of time?

Experienced exponential growth

What is the current world population?

7 billion plus

Describe how improvements in agriculture helped aid this growth.

People had more food to support larger families

Describe how improvements in medicine helped aid this growth.

New / more advanced medicines cured illnesses and allowed people to live longer.

Describe how improvements in sanitation helped aid this growth.

Better sanitation (proper sewage systems) prevented / reduced the amount of disease which allowed people to live longer.

What are the three main uses of land?

Agriculture, development, mining

Approximately what percentage of Earth is dry land?

~75%

An area with large amounts of valuable aquatic organisms is called a…

Fisherie

Compare selective cutting and clear- cutting.

Selective Cutting: only certain trees are harvested Clear-Cutting: All the trees in an area are harvested

Define sustainable yield.

Sustainable Yield: an amount of renewable resource that can be harvested without reducing the future supply

Compare renewable and nonrenewable resources.

Renewable: resources that can be replenished over time. Nonrenewable: resources that once used, are gone.

Approximately how much of Earth’s water supply is readily available for our consumption?

Less than 1%

Poor soil management can result in ___________, desertification, or nutrient depletion.

Erosion

Soil can experience _____________ if a farmer grows the same crop in a field over a long period of time.

Nutrient depletion

The “farming” of salmon, catfish, and shrimp in artificial ponds is called…

Aquaculture

Who typically causes and benefits from the activities that cause pollution?

humans

What is the waste that is created in homes, businesses, schools, and other places in the community called?

Municipal solid waste

When rain falls on landfills and seeps through the waste, what dangerous liquid can be created?

leachate

Hazardous wastes can be classified as ignitable, corrosive, reactive, or ______

toxic

List one advantage and one disadvantage of incineration.

Advantages: heat from the burning can be used to generate electricity, they don’t directly pollute ground water Disadvantages: very expensive, pollutes air

Using biodegradable items can reduce your impact. Define biodegradable.

Biodegradable items can be broken down by microorganisms.

What are the three R’s related to minimizing your impact?

Reduce, Reuse, Recycle

True or false: recycling materials is a less expensive process than creating the item from new again.

true

What is the device on all vehicles that helps minimize air pollution?

Catalytic converters

This act was passed to require the use of catalytic converters and other devices to reduce the amount of air pollution.

The Clean Air Act

Instead of riding in a car / bus to school, how could you reduce the amount of air pollution produced?

Walk / ride a bike

The process of restoring land to its natural productive state is called …

Land reclamation

Which of the following are biodegradable? Paper, glass, or traditional plastic?

paper

This type of waste is dangerous for thousands of years because of the radiation given off.

Radioactive wastes

True or false: The average person produces 4.5 lbs of garbage daily Every hour people throw away 2.5 million plastic bottles Every year people throw away enough white paper to build a wall 4 meters high that stretches from coast to coast Every year people throw away 1.6 billion pens

TRUE

Make your wager