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It has happened in as little as a single generation in the case of orchids. Generally speaking, groups of organisms that do not interbreed on on the borders of speciation, whereas those that cannot interbreed are considered to be separate species.

Dromedaries and llamas have been separated by more than ten million years, yet they can interbreed. Humans and chimpanzees are separated by less than six million years, yet it is doubtful our species can interbreed.

It probably depends significantly on the amount of change between groups, but I would estimate most species separated for more than a hundred thousand years would be sexually incompatible.

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Why does evolution take a long time?

The reason that evolution takes a long time is because each generation, the offspring are nearly identical to their parents. However, they are slightly different, and thus a few of the individuals are slightly more likely to survive than the others. Then, these individuals spread their genes to just a few more offspring than the others do.Because there is only a tiny difference in how many offspring the more adapted version has, it takes a long time for the more adapted version to completely replace the older version.


How long does the process of natural selection and evolution take?

The process of natural selection and evolution can vary in terms of the time it takes, ranging from hundreds to millions of years depending on the species and environmental factors. Evolution is a gradual process that occurs over generations as populations adapt to their changing surroundings through natural selection.


How long did the evolution take?

The process of evolution has been ongoing for billions of years, with life forms gradually changing and adapting to their environments over time. The exact duration can vary depending on the specific species or traits being considered.


How long does photosynthesis take to occur in plants?

Photosynthesis typically takes a few seconds to a few minutes to occur in plants, depending on factors such as light intensity and availability of water and nutrients.


Can photosynthesis occur with artificial light sources?

Yes, photosynthesis can occur with artificial light sources, such as grow lights, as long as the light provides the necessary wavelengths for the process to take place.

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