The taj mahal in india is made of pure white marble. it is slowly losing its white color because of pollutants from vehicles and industries around it. the wear comes from acid rain. the taj mahal is an example of weathering by .

rainfall and chemicals

hello,

The Taj Mahal in India is made of pure white marble. It is slowly losing its white color because of pollutants from vehicles and industries around it. The wear comes from acid rain.

The Taj Mahal is an example of weathering by chemicals

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 .. .

i would say the prokaryotic cells the prokaryotic cells are less complex, are usually found only in unicellular organisms and have more limited capabilities than eukaryotic cells.