A primary spermatocyte is a diploid cell that gives rise to two secondary spermatocytes after the first meiotic division. The primary spermatocyte has

Which strategy is an example of how companies may upgrade themselves to meet changing customer preferences? a.doing door-to-door sellingb.using billboards to advertise the productsc. making online shopping services availabled.giving discounts on products

What substance acts to prevent sudden ph changes in bodily fluids?

What material did the moon come from?