According to the passage, what causes mutations during protein synthesis? A. A wrong base becomes a permanent part of a new DNA sequence.
B. Most mutations happen spontaneously as DNA replicates itself.
C. A great many mutations occur due to chemicals in the environment.
D. Mutations do not occur during the process of protein synthesis.

relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.  

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.  

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

hope this .. .

for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

hope i even just a little : )

i was thinking 4.0 v hope this