How do biozones scientists? choose all that apply. a) the relative age of the rock can be determined by the types of fossils it contains. b) rock layers in different locations that contain the same fossils may be considered the same age. c) a biozone can trace the path of evolution over time. d) a specific biozone can indicate a particular type of past environment.

 C). A biozone can help trace the path of evolution over time.

Biozone is a stratigraphic unit which contains fossils in layers of strata existed in a particular geologic period.  It is named as biozone because it depicts the number of biological taxa existed in particular strata. Therefore, the variation in features within taxonomic groups in biozones can give indication of evolution with respect to time.  

i believe the correct answer from the choices listed above is the first option. the scientists need to look at the   validity of data, claims, hypotheses, and observations before  developing an argument. they base their arguments on facts that are present and they make sure they have proofs. 

explanation:

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

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