Which describes an example of ecological succession?
A)
A caterpillar developing into a butterfly.
B)
A meadow replacing a pond in its flood plain.
C)
A climate gradually changing over many eons and becoming colder.
D)
The replacement of a native species of animal with an invasive species.

Question

Which describes an example of ecological succession?
A)
A caterpillar developing into a butterfly.	
B)
A meadow replacing a pond in its flood plain.	
C)
A climate gradually changing over many eons and becoming colder.	
D)
The replacement of a native species of animal with an invasive species.

anonymous · Answer

Oil, natural gas, and coal are considered to be nonrenewable resources. Why are these fuels considered to be nonrenewable?
A)
The burning of these fuels does not allow the waste products to be recycled.	
B)
These fuels are available in a limited supply--when the fuel is used it is no longer available.	
C)
The amount of pollution released from the use of these fuels is much higher than with renewable sources.	
D)
The technology used to geneate energy by the use of these fuels is much older and less efficient than current technology.

anonymous · Answer

C, C