Many were killed by disease and ohters were driven further and further west
100
As the years go on these happen and have become more and more deadly
War
100
one negative effect of moderniztion that happens around the world and can be seen in developing subdivisions
deforestation
100
what happens once every now and then that ruins fishing, kills animals, and cover beaches
oil spills
200
What were negative effects from factories
Smoke pollution and poor working conditions
200
As we expanded through america and started to populate we needed food, what began happening to animals.
Animals were hunted and many were killed and some were driven to near extinction. such as buffalo.
200
this technology caused the destruction of trees, killed people, made land infertile, and caused cancer and burns
atomic bomb
200
the physical growth of urban areas as a result of global change
urbanization
200
What is one of the major problems we have created in areas such as africa
Contaminated drinking water
300
What technology came that improved transportation but caused the destruction of land and trees for it
Trains
300
As cars became more popular what was built and what was its effects
Roads and they cause road kill, destruction of land, clearing of land, and mass uprooting of animals.
300
as people expand new technology is created to meet our needs. one device which blocks rivers, stops floods but also hurts animals that live down stream from getting food is
Dams
300
Over population causes what problems
shared sweage, contamination, bad living conditions, and lack of jobs and uneployment.
300
certain aerosol sprays were banned in 1978 because they caused what, which allowed uv rays to come through the atmosphere
holes in the ozone layer
400
This caused mass digging and clearing of lands, provided fuel for trains, and had terrible conditions and occured under ground.
coal mining
400
with hope of riches and need for expansion out west, trees and land were torn up for the creation of what things
Rail roads, bridges, damns, and roads
400
Pesticides although help crops do what to the enviornment
after harvest degrade soil, kill insects such as bees which prevents pollination, and contaminates water through run off.
400
more workers in factories caused the spread of what
diseases
400
generates power without fosil fuels but presents a threat to birds and their migration routes
wind turbines
500
Do to increase in job loss of farmers and need for money familys were forced to use what.
Child labour
500
Due to over cultivation and lack of care and a drought what major event occurred in the 1930's that crippled midwest agriculture
The Dust Bowl
500
technology can help in war but also hurt such as these two weapons introduced during the vietnam war which destroyed thousands of trees and miles of forest which are still partially baren today
Napalm and Agent Orange
500
Increases quality of living which causes people to eat more food and own more things which causes what
obicity, need for more animals to meet need of food consumption, and more fuel to power houses.
500
What book written in 1962 helped people see the effects of chemicals on the ecosystem.