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Ecology
Chapter 3
30
Science
7th Grade
05/10/2012

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Cards

Term
Sustainable Practices
Definition
Describes the managing of certain natural resources so that they are not harmed or used up
Term
Population Denisty
Definition
The measure if the number of people in a given area
Term
Conservation
Definition
The process of saving or protecting a natural resource
Term
Renewable Resources
Definition
Can be used over and over again
Term
Pollution
Definition
The addition of harmful substances to the environment
Term
Nonrenewable Resources
Definition
Can't be replaced; Usually found underground
Term
Biodiversity
Definition
The number and variety of living things found on Earth or within an ecosystem
Term
Natural Resource
Definition
Any type of material or energy that humans use to meet their needs
Term
What are some examples of natural resources?
Definition
Solar energy, Air and Wind, Water;Tides;Flowing, Soil and Plants, Fossil Fuels, Oil, Natural Gas, Coal, Minerals, Salt, etc..
Term
What is the human population now? What do scientist predict it will be in 2050?
Definition
6 billion; 9 billion
Term
What percent of Earth is fresh water? What percent is fresh water that can be used?
Definition
3%; 1%
Term
Name some examples of Renewable Resources.
Definition
Sunlight, Wind, Geothermal Energy, Hydroelectric, Water, etc..
Term
Invasive Species
Definition
a new spwcies being introduced to a new habitat
Term
Native Species
Definition
A species already in place. They are where they are supposed to be.
Term
Environmental Protection Agency
Definition
enforces all federal environmental laws
Term
What can you do to conserve natural resources?
Definition

Take shorter showers

Reduce, Reuse, Recylce

Save water,

Carpooling,

Riding bikes to school or work,

Walk instead of using a vehicle,

Use less electricity by turning off the lights when you're not using it, etc..

Term
Think______, Act__________
Definition
globally; locally
Term
Geothermal Energy
Definition
uses heat from inside the Earth to produce steam which is used to generate electricity
Term
Fossil Fuels
Definition
nonrenewable resources that can be used to run factories, power plants and vehicles
Term
Solar Energy
Definition
uses sunlight to produce electricity
Term
Examples of Fossil Fuels
Definition
Oil, Petroleum, and Electricity
Term
Wind Energy
Definition
uses the air to produce electricity
Term
What can fossil fuels do?
Definition
may leak dangerous toxins into groundwater
Term
Why is burning trash dangerous?
Definition
It releases chemicals into the air
Term
How can foodwebs be affected?
Definition
by the extinction of a few species
Term
What do factories and power plants produce?
Definition
gases that pollute air and water
Term
How can pesticides prove that humans endanger ecosystems?
Definition
from farming drain into rivers and lakes. Polluting water
Term
Examples of nonrenewable resources are..?
Definition
Fossil Fuels, Oil, Coal, Natural Gas, Minerals, and Salt
Term
___________ is released back into the environment before_______________are lowered to a _______level.
Definition
Wastewater; water levels; safe
Term
What can effect an ecosystem?
Definition
Air pollution, water pollution, sound pollution, habitat removal, changing habitats, etc..
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