How population affects the environment?? i need help!!?

Question

ok i have a presentation and i have to explain the effects of population (growth) on the environmet. so far i have this:

*climate chage (global warming)- more people burning fussil fuel and the released of CO2

* Land-use-- more people= more houses

*Forests-- deforestation because of land use

*Destruction of wild life--- caused by deforestation among other reasons

*Pollution

*water and energy use

Do u have other ideas i could use???? Like positive effects because so far i dont really have any. i would really appreciated.

Answer 1

-resource depletion

that's the only other one i can think of, but i did learn this year that over-population is the cause of every other environment problem.

Answer 2

One aspect of land use to consider is POPULATION DENSITY.

Do people live in ranch style houses (low density), Townhouses (medium density), or tenements (high density)

Advantages of low density are personal, i.e. more personal living space.  Disadvantage is it results in higher energy use for several reasons.

1.  Larger homes take more energy to heat and cool.

2.  Lawns use a lot of water.

3. Greater distance result in more automobile use.

4. Public transit, to be effective, must serve a certain number of potential riders per mile.  This places potential transit routes farther apart, necessitating longer walks to access it, discouraging use.

Answer 3

what makes you think there is any positives?  Man is the only species that reproduces without thinking about substainability.  Lemmings hurl themselves off the cliffs into the sea when they are overpopulated for the food source.  

   Man uses and tosses away after one use or tosses becauses it has a blemish.    Man uses hundreds of gallons of gasoline to move his butt around and nothing more....polluting the atmosphere with poisonous carbon monoxide, .

Man paves over natural ground with pavement and concrete and sprays it with  chemicals so that nothing grows.   Man also creates nuclear waste which will always be a hazard to everyone and everything.  Same goes for chemicals such as DDT. Man does not think about the poisons he creates, relying on disipation(meaning it is spread out so that everything is infected with it - so either we live and tolerate a low doseage or we don't.)

We have been lucky up to now....that we have not created the ultimate poison in which to have (any) is too much.

Answer 4

Along the same lines as David, lookup sprawl.  Basically everything he states in his post relates to sprawl, which is very bad for the environment