Why has Earth's human carrying capacity increased greatly?

A.Other organisms have been displaced by agriculture, so there is more space for humans.
B.Humans have modified their environment due to technological advances.
C.Humans can live closer together than other animals.
D.Humans are now eating fewer plants than they used to.

2.Why is oil considered a nonrenewable resource?
A.It cannot be used up.
B.It is used faster than it forms.
C.It forms faster than it is used.
D.It can be recycled.

3.Which of the following is not a renewable resource?
A.coal
B.wind energy
C.solar energy
D.drinking water

4.What term describes the use of resources in such a way that they will be available for future generations?
A.unsustainable
B.renewable
C.sustainable
D.nonrenewable

5.What factor does not determine the size of an individual's ecological footprint?
A.amount and efficiency of resource use
B.amount of waste produced
C.size of population
D.toxicity of waste produced