by mike artman. development paving roads, constructing houses, and clearing land for farms are...
TRANSCRIPT
DevelopmentDevelopment
Paving roads, Paving roads,
constructing houses, and constructing houses, and
clearing land for farms are clearing land for farms are
considered development. Even considered development. Even
though we may need to develop though we may need to develop
to survive doing this will also kill to survive doing this will also kill
many wildlife habitats. many wildlife habitats.
ErosionErosionHave you ever Have you ever
wondered what erosion is?Erosion wondered what erosion is?Erosion
is when wind, water or ice move is when wind, water or ice move
dirt and rocks. Roots from plants dirt and rocks. Roots from plants
like trees can help stop the like trees can help stop the
process of erosion. Rain and process of erosion. Rain and
weather can cause erosion. weather can cause erosion.
Working the land can also cause Working the land can also cause
erosion.erosion.
MiningMining
Mining is when you remove a nonrenewable Mining is when you remove a nonrenewable
resource from the ground. There are different processes resource from the ground. There are different processes
of mining. One process is strip mining. Strip mining is of mining. One process is strip mining. Strip mining is
when you acquire the minerals from dirt near the top when you acquire the minerals from dirt near the top
layers of earth and then replace the dirt. However, this layers of earth and then replace the dirt. However, this
process can cause the land to stay unfruitful for years. process can cause the land to stay unfruitful for years.
Another type of mining is underground mining. This is Another type of mining is underground mining. This is
when tunnels are built deep into the Earth and the dirt when tunnels are built deep into the Earth and the dirt
is brought up through a shaft. is brought up through a shaft.
AgricultureAgricultureMost of the world can’t be used for Most of the world can’t be used for
farming because the ground is either too farming because the ground is either too
salty, too dry or too wet, or it is too salty, too dry or too wet, or it is too
mountainous. Farmland is needed to feed mountainous. Farmland is needed to feed
people and livestock to survive. The land people and livestock to survive. The land
must be prepared to grow food through must be prepared to grow food through
various ways. Cutting down trees in wooded various ways. Cutting down trees in wooded
areas, irrigating dry farm land or draining areas, irrigating dry farm land or draining
over wet lands are ways of preparing the land over wet lands are ways of preparing the land
for farming.for farming.
Nutrient DepletionNutrient Depletion When soil becomes less fertile is called When soil becomes less fertile is called
nutrient depletion. A way that will prevent nutrient depletion. A way that will prevent
nutrient depletion is to fallow fields which is nutrient depletion is to fallow fields which is
when you leave a field unplanned for a season when you leave a field unplanned for a season
or two. Another way that farmers tackle is to or two. Another way that farmers tackle is to
do crop rotation which is when a farmer do crop rotation which is when a farmer
switches between two fields and leaves one switches between two fields and leaves one
follow and the other planted. follow and the other planted.
DesertificationDesertification
What is desertification. Over the cores of What is desertification. Over the cores of
past 50 years there have been about 5 billion past 50 years there have been about 5 billion
hectare of land. Desertification is sometimes hectare of land. Desertification is sometimes
because is climate and during this period of because is climate and during this period of
drought plants can't grow. Desertification is a drought plants can't grow. Desertification is a
serious issue because people can't feed there serious issue because people can't feed there
livestock or give them water.livestock or give them water.
Restoring the LandRestoring the Land
Thankfully after land is damaged humans Thankfully after land is damaged humans
can restore the land back to its previous state, can restore the land back to its previous state,
which is called land reclamation. Not only can which is called land reclamation. Not only can
we restore the land we can also restore the we restore the land we can also restore the
habitats that were once there. An example of habitats that were once there. An example of
land reclamation is when a company is done land reclamation is when a company is done
mining in an area they put the soil back were it mining in an area they put the soil back were it
was and plant grass.was and plant grass.
ReviewReview• What is erosion-What is erosion-is when wind, water or ice move dirt is when wind, water or ice move dirt
and rocksand rocks
• What is Development-Paving roads, constructing What is Development-Paving roads, constructing
houses, and clearing land for farmshouses, and clearing land for farms
• What is Mining-when you remove a nonrenewable What is Mining-when you remove a nonrenewable
resource from the groundresource from the ground
• What is Nutrient Depletion-When soil becomes less What is Nutrient Depletion-When soil becomes less
fertilefertile
• What is Desertification-When you have farmland that What is Desertification-When you have farmland that
becomes a desertbecomes a desert
• What is Land Reclamation-after land is damaged What is Land Reclamation-after land is damaged
humans can restore the land back to its previous humans can restore the land back to its previous
statestate