The map below shows dark bands that indicate long mountain ranges on the west coasts of North America and South America (adapted from NYSED) North America Atlantic Ocean Pacific Ocean South America. What caused the formation of these mountain ranges?

A) Erosion of coastlines by ocean waves

B) Deposition of over sediments entering the ocean

С) Colision c Earth's tectores plates

D) Uneven heating of Earth's surface​

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 .. .

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements