Which of these choices is a drawback of the clean water act ? a. it targets point sources pollution b. it targets non point source pollution c. it excludes agriculture runoff d. it excludes lakes rivers and streams

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

How are fossils used to date organisms?

Lupe is a carrier for color blindness. her husband clifford is colorblind. if lupe and clifford have four children, what's the probability of a boy being colorblind?