Identify the moth variant that was selected for during the industrial revolution, when pollution began to kill the lichen that previously covered all of the trees.

Black moth

Explanation:

During the time of the industrial revolution, the lichen that covered all the trees previously got killed. Due to the pollution arising from the industries, the colour of the woods of the trees turned into black. As a result, the light- coloured moths were not able to hide from their predators as their colour no longer matched with the colour of the trees. The black coloured moths were more adapted to survive in this environment because their colour matched with those of the woods of the trees. They were better adaptable to live in the Industrial Revolution.

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 .. .

format change of dna.