Which of the following is true about the Earth's natural resources? A.
Natural resources were once formed by geologic processes inside the Earth, but they are now created only by human-made processes.
B.
The natural resources on Earth can never be used up because humans can always make more resources to replace them.
C.
The same natural resources are available in all areas of the Earth because the geologic processes that formed them occurred the same way in every location.
D.
Natural resources are unevenly distributed on Earth because the geologic processes that formed them occurred in different locations over time.