PLEASE ANSWER ASAP, WILL GIVE BRAINLIEST

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

Aboy with an extra x chromosome probably has which of the following syndromes?

9. the history of life on earth is recorded in