Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).
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Answer:
A community is a group people who all live in the same environment and place and help each other out in certain situation.
Explanation:
Answer and explanation;
Health-care in the ancient world was very experimental and under researched. The ancient methods for health care was affordable only if the best health care was accessible when needed.
The healthcare in the ancient world had a lot to do with herbs and plants because this is what they knew. However they also learned from these and learned about the body and how it works and tried different things.
Oxygen dependent maturation of the wine
concentration of the wine when water evaporates is your answer .-.