A system of living and nonliving things working together.
100
What is a producer?
Plants that make their own food using sunlight.
100
What are natural resources?
Living and nonliving things from nature that support life on Earth.
100
What does renewable mean?
A resource that can be replaced easily or doesn't run out.
100
What is a nonrenewable resource?
Nonrenewable resources exist in limited amounts or are used up faster than they can be replaced.
200
Where do all food chains and food webs begin?
The sun (energy from the sun)
200
What are consumers?
Consumers cannot make their own food so they eat or consume other organisms.
200
What is recycling?
Saving, collecting, and reusing materials rather than starting with new materials.
200
Soil is a renewable natural resource- true or false?
True.
200
Why are fossil fuels used so widely in the world? What is the positive side of using them?
They have been inexpensive and powerful.
300
What do decomposers do?
They break down dead plants and animals to return their nutrients to the soil.
300
What are three types of soil?
Clay, silt, and sand.
300
What is humus?
Decaying plant and animal materials in the soil- dark brown in color.
300
What is one problem that farming countries can have with their soil?
Soil erosion- when the soil wears away and strips nutrients from the soil, negatively affecting the ability to grow crops and feed the people.
300
What are some alternatives to using fossil fuels in your car or vehicle?
Electric cars, french fry oil & diesel engines, hybrid cars.
400
What is the difference between a carnivore and a scavenger?
A carnivore eats fresh meat and a scavenger eats only dead meat.
400
What is the difference between a food chain and a food web?
A food chain begins with sunlight, then producers, then the animal that eats that producer, etc. in a straight path.
A food web is a system of overlapping food chains.
400
What is conservation?
Using only what you need as efficiently as possible.
400
Name three types of renewable energy sources.
Wind, water, and solar.
400
Name three types of fossil fuels.
Oil or petroleum, coal, and natural gas.
500
Name five types of ecosystems that we have studied.
Tundra, desert, rain forest, forest, and grassland.
500
Name an example of a carnivore, an omnivore, and a herbivore.
Carnivore- Mountain lion, tiger, etc.
Omnivore- Coati, Roadrunner, etc.
Herbivore- Jackrabbit, bighorn sheep, lizards
500
What is the other name for oil?
Petroleum
500
What are some other examples of renewable natural resources (not including energy sources)
Air, water, trees, animals, oxygen, and soil.
500
Name two ways that fossil fuels are bad for our environment.
Burning them produces pollution, mining the fuels can damage the environment (oil spills, stripping mountains), and smoke and ash can be returned to Earth as acid rain.