What are the two general types of cells in the human body?

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

What is the following best defines climate?

The activity of the modern sample is 1.10 bq . how long does that measurement take?