Which statement is true of chloroplasts? a. they transport glucose into the cell. b. they convert light energy into chemical energy. c. they are present in animal cells, but not in plant cells. d. they convert the energy in glucose into a more usable form. 25 points

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 .. .

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.