Cells Asexual production is when offspring arises from a single parent. Cells are a prime and if not the most know example of asexual production. A single cell can split into two cells and those two cells will split into two cells and so forth. Cells do not require a partner to reproduce and so they are a type of asexual reproduction.
Blackworms These worms have been known to break apart and then the two halves would grow into two entirely separate worms. This method of reproduction does not require a partner. So, like cells blackworms are also an example of asexual reproduction.
CFC's are chlorofluorocarbons. They generally eat the ozone layer. It stands to reason that a reduction in CFC's would reduce the depletion of the ozone layer allowing it to slowly repair itself through natural processes.
The correct term for on female arctic fox would be "organism". Although it should be noted that this depends somewhat on the context of the environment.