Why meiosis-I is called reduction division?

Fossils can only be formed when? if mud, silt or tar is in the area to preserve the fossil ierosion does not occur and allows the fossil to form oxygen and microorganisms cannot decay the bones the area is dry and does not contain mud or silt

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?

In which layer do organisms on earth love?