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Science
Human impact on the environment
36
Science
7th Grade
02/26/2023

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Cards

Term
natural resources
Definition
something from Earth that living things use to meet their needs.
Term
How is land usage impacted as population increases?
Definition
As population grows so does our need for food.
Term
deforestation
Definition
cutting down of large areas of forests for human activities
Term
What is the impact of agriculture on the environment?
Definition
Impacts include pollution from pesticides, reduced soil quality, and reduced space for other activities.
Term
biodiversity
Definition
the variety of life in a particular place
Term
urbanization?
Definition
development of land for houses and other buildings near a city
Term
What are landfills and where does our garbage go?
Definition
Landfills are areas where trash is buried. 34% of trash is recycled, 11% is burned and the remaining 55% is placed in landfills.
Term
Pollution
Definition
is the contamination of the environment with substances that are harmful to life.
Term
conservation
Definition
is the careful use of Earths materials to reduce damage to the environment.
Term
What does it mean to reduce, reuse, and recycle?
Definition
helps reduce the amount of trash that ends up in landfills.
Term
reforestation?
Definition
involves planting trees to replace ones that have been removed.
Term
reclamation?
Definition
the process of restoring land disturbed by mining.
Term
What are national parks and what purpose do they serve?
Definition
They are habitats for wildlife, the purpose is to preserve land.
Term
How is water used by humans?
Definition
we use water to wash cars, do laundry, for agriculture, recreation and transportation.
Term
How is the amount of water used impacted by the human population?
Definition
as human population increases so does the impact on water.
Term
What percentage of Earth’s water is freshwater?
Definition
3%
Term
water pollution
Definition
human activities such as mining and construction. Oil spills pollute water.
Term
What are sinkholes and how do they form?
Definition
form where the ground collapses because of lack of support.
Term
________________makes up the majority of Earth’s accessible freshwater.
Definition
Groundwater
Term
___________are important but they may also impact the surrounding environment.
Definition
Dams
Term
________and _______are often dammed to create reservoirs.
Definition
Streams and Rivers
Term
What impact can agricultural runoff have on the surrounding environment?
Definition
Agricultural runoff can contain fertilizers which can upset the balance of nutrients in lakes, oceans, and other bodies of water.
Term
What impact can industrial waste have on the surrounding environment?
Definition
Industrial waste can contain toxic chemicals that can harm aquatic organisms.
Term
What impact can urban runoff have on the surrounding environment?
Definition
Urban runoff can contain pesticides and fertilizers from lawns, oil, and gasoline from vehicles. which can reduce the quality of surface water and ground water.
Term
What impact can runoff from mines have on the surrounding environment?
Definition
runoff from mines can be acidic and can contain metals. It can contaminate surface water and groundwater, drinking supplies and affect the grow of aquatic organisms.
Term
What impact can oil spills have on the surrounding environment?
Definition
oil spills expose aquatic organism's to toxic chemicals. It can also reduce the amount of oxygen in the water.
Term
What impact can runoff from construction sites have on the surrounding environment?
Definition
runoff from construction sites might contain excess sediment which makes water in streams and rivers cloudy. It reduces the amount of sunlight available for photosynthetic organisms.
Term
Where does ocean pollution come from?
Definition
volcanic eruption, Emissions from power plants and cars and dumped trash
Term
What can cause excess sediments to enter water, and how can excess sediments impact
water quality?
Definition
sediments erodes from land and washes into oceans this is increased when humans cut down trees near rivers and oceans causing excess sediments that block light, organisms that use light for photosynthesis die.
Term
How can excess nutrients impact water quality?
Definition
can cause huge increase in algal populations. which can kill marine organisms.
Term
How does population impact the use of natural resources?
Definition
a growing population needs land to build more houses and roads and to grow food.
Term
How does agriculture impact biodiversity?
Definition
when land is grown to raise one type of crop biodiversity decreases. When one organism changes or disappears then multiple organism changes or disappears.
Term
What is the impact of urbanization on the area?
Definition
flooding can occur. Destroys habitats, reduces farmland and impacts ground water supplies.
Term
What is the impact of deforestation?
Definition
Deforestation destroys habitats which can lead to species extinction. When there are fewer trees more carbon dioxide remains in the atmosphere.
Term
Impact of pesticide usage?
Definition
used for farming these fertilizers can seep into groundwater and pollute supplies of drinking water.
Term
Impact of soil quality
Definition
when plants are removed to clear land soil is exposed causing soil erosion. which can lead to desert like conditions. which means you cannot grow food on this type of soil
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