Ch.14 - 3,4 quiz Flashcards
What is the smallest use of land
urban
trees are used for (2)
fuel & paper
mineral deposits large enough for profit
ores
comes from boxite
aluminum
comes from hematite
iron
advantages of land as a resource (2)
soil & crops can be replaced
trees can be replaced
Disadvantages of land as a resource (2)
Deforestation
Pollution
cutting of large areas for human activities
deforestation
removal of trees can lower _______
photosynthesis
_____ causes an increase in co2
low photosynthesis
contaminates group water supplies
Pollution from land recources
ways to manage land resources (4)
recycling land resource products
compost
garden
preserve resources
helps provide energy for your cells
oxygen
4 uses of water in our body
main components of blood
protects body tissue
helps maintain body temp
has a role in chemical reactions
Nitrogen-based chemicals react with sunlight
smog
smog can be trapped under ______ for prolonged times
warm air
nitrogen and sulfur compounds react with water
acid precipitation
acid precipitation lowers pH balance to ___
5.6
pollutes soil and kills trees
acid percipitation
how much of water is unusable freshwater
3%
4 uses of water (outside of personal)
farming
electricity production
household activities
transportation
limits the amount of pollutants that can be released
clean air act
legislates the protection of drinking water supplies
safe drinking water act