Identifying the Different Levels of Organization Complete the sentences to describe the different levels of organization in organisms.
A(n)
is a group of organs that work together to perform a common function.
A(n)
is a group of tissues that work together to perform a common function.
A(n) is a basic unit of structure and function of all living things.
A(n)
vis a group of cells that work together to perform a common function.

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 .. .

cuz he is really really short, assuming an unorthodox and inherently unlucky configuration of elevator buttons…

explanation:

it takes hundreds of years to become stable.

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affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.