I could be wrong but I think it's c.
Answer:
Natural selection
Explanation:
The action of natural selection consists in selecting individuals more adapted to a given ecological condition, eliminating those disadvantaged for that same condition. The most appropriate expression refers to the greater probability of a given individual surviving and leaving descendants in a given environment.
Natural selection acts permanently on all populations. Even in stable and constant environments, natural selection acts in a stabilizing manner, is present, eliminating deviant phenotypes. However, the environment does not represent a constant and stable system, either over time or over space, which determines different interactions between organisms and the environment.
Natural selection is the principle that postulates that hereditary traits that provide a reproductive or survival advantage are more likely than alternative traits to be passed on to subsequent generations and are therefore chosen over time.
Fossil fuels release carbon dioxide, nitrogen dioxide, sulfur dioxide, carbon monoxide etc. when burnt that can have severe consequences on the habitats. They are non-renewable sources of energy as they are derived from pre-historic fossils and won’t be available once they are fully used. Their sources are limited and they are depleting at a faster rate.
Anaerobic organisms, those which do not perform the standard 'cellular respiration' or 'photosynthesis', do not require oxygen, nor sunlight to survive. Instead, they survive off of glycolysis which is a process also carried out in aerobic respirators, but it is one that does not <em>require </em>oxygen or sunlight. You can do this by using lactate, sulfate or even alcohol instead of the usual oxygen.
One of the 48 constellations listed by the Greek astronomer Ptolemy. It is one of 88 constellations recognized by the International Astronomical Union.
