Identical twins is the correct answer. As they both come from the same egg that has split into two.
However paternal twins are two different eggs and therefore have different dna.
Answer : Without its keystone species, the ecosystem would be dramatically different or cease to exist altogether.
<em>Because sometimes building these facilities is expensive and they usually have to be built in remote areas and burning fossil fuels has also been cheaper than using renewable energy in the past. Another issue is that the form of energy isn't available all the time.</em>
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