Rapid environmental change results in rapid evolutionary change (as long as it doesn't occur too fast, in which case the organsisms will simply die out).
Also the disappearance of the dominant organisms (eg dinosaurs) leaves an empty space in the ecosystem and the remaining organisms will evolve quickly to fill it.
Finally, the release of an animal into a new environment or a domesticated animal into a natural environment results in rapid evolution. Two examples are cane toads in Northern Australia which have evolved longer legs so they can travel further and feral cats in Australia reverting back to their natural state (insanely big and evil-looking) in just 4 generations.
yes.
Organisms are required for evolution to occur. Evolution is defined as something that happens when organisms reproduce.
For a mutation to affect evolution it must occur in the dominant allele. This allele is what is passed on.
The only known instance of evolution occurring is here, on Earth. Logic dictates, however, that evolution occurs wherever there is life.
Variation must exist.
During masturbation.
The planet must have a molten interior
posti
A period of intense technological changes encourages mergers and acquisitions.
Yes. Evolution is a continuous process. It happens to all populations of living things, even to human populations. However, it may occur at varying rates, depending on the size of the population and other circumstances, so it may not be immediately apparent that evolution is, in fact, happening.
yes.
Because adaptations are an observed effect of evolution. They could not happen if evolution did not occur.
Organisms are required for evolution to occur. Evolution is defined as something that happens when organisms reproduce.
Evolution occurs in population not in an individual.
Yes. Evolution ocurred in all geologic periods.
gene duplication (might give advantages)
I should think it might occur through droughts, famines, floods, causing populations to originally go separate directions and travel many thousands of miles.