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7th Sci Unit 3
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How are fossil fuels made?
Dead organisms get buried under mud, over time layers form and add pressure for millions of years.
What is a fossil fuel and give three examples.
A natural fuel formed from the remains of dead organisms. Coal, oil, gas
Name 4 types of renewable energy.
Wind, solar, hydroelectric, biomass, geothermal
What is conservation?
Taking care of the environment and helping other species to survive
What happens when a habitat is destroyed?
Plants and animals no longer have a place to live.
Name 5 ways to reduce pollution.
pick up trash, plant trees, reuse resources, reduce use, recycle
Where do CFCs come from?
old air conditioners, fridges, and aerosols
What caused the ozone hole?
CFCs (chlorofluorocarbons)
How does the ozone layer help us?
It absorbs ultraviolet light from the Sun.
Name three causes of air pollution.
Factories, car exhaust, volcanoes, fires
Name 5 types of pollution.
Land, air, water, noise, light
What causes acid rain?
Burning fossil fuels releases gases that mix with rain and produce acid rain.
What is one negative effect of farming on a food chain?
It destroys the natural habitat of the animals there.
Name three adaptations of a lion.
Claws, strong legs, sharp teeth
What might happen if we catch too many fish from the ocean?
The animals that eat the fish might not have anything to eat.
Name 6 consumers.
Any 6 animals
Name three producers.
Trees, grass, cactus, bushes
Give an example of a food chain with 4 parts.
Grass, cricket, spider, bird
How is an eagle adapted to live and hunt in the air?
Wings for flying, claws and beaks for grabbing
Name five habitats.
Desert, forest, ocean, polar, mountain