Actually, it is INNATE IMMUNITY. That is the proven right answer so be careful.
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The correct answer is option B, that is, Genetic drift greatly affects small populations, but large populations can recover.
Genetic drift in combination with mutation, natural selection, and migration is one of the most fundamental mechanisms of evolution. Genetic drift refers to a change in the relative frequency of distinct genotypes in a small populace, owing to the chance vanishing of specific genes as individuals do not reproduce or die.
The answer is.. C, Network!
It reproduces both sexually and asexually.. sexually both male and female release sperms and eggs in water ,after fertilization it forms planula which then asexually reproduce either by budding or strobilization..
