<span>"It refers to promoting open discussion whenever error occurs without fear of recrimination"
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The main reason is that there is no atmosphere. This means that there is no weather and no weather means that there is no wind or rain. Wind and rain are main components of erosion and because there is no erosion, craters can stay preserved for a very long time.
Hope this helps!!
Water expands as it freezes, so ice generally has more oxygen in it than liquid water, making it denser.
It is the fraction of all chromosomes in the population that carry that allele.
