Has the rapid rise of erosion rates been adequately recognized by farmers and scientists as a problem?

It can be said that the scientists and big portion of the farmers do not see with same eyes the problem with the erosion that is ever growing one. The scientists are fully aware of it, and constantly are warning and giving suggestions as to how to stop or at least minimize the erosion for the long term well being of everyone. The farmers on the other hand (not all but the majority of them) do not share that opinion, very often because they lack the knowledge and education about it, or even because they just don't care. The problem is very big the least developed and the developing countries because new land is constantly cleared for farming, it erodes quickly and is destroyed without any measures taken to stop that, and than the people just continue to clear new land and that goes on and on.

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 answer is b.) hydrogen bonds between bases.