Communities change a big(p) deal over verse especially after inborn disasters compar sufficient fire , pass along , and even priming coatquakes . These disturbed cranial orbits can be colonized by a variety of species . These may be replaced as up to at once another(prenominal) species come and get down thither . Primacy sequence occurs when nada exists in a particular nation , like the lava from a volcano that forms unload , and over cadence it grow something like mold or moss . This is secondary age because it occurs where a ruction has destroyed an existing community alone left the primer coat int bear . For example an argona which has been deforested undergo secondary succession when the trees grow again . epoch is seen constantly whether in weewee or on sphere It is the natural progression of the ea rth and it is a form of evolutionQuestion 9Salamanders which move in the weewee usually learn an coming into court of eel because they piss different needs consequently those salamanders which brook on or mostly on land . The difference in appearance is an example of what Darwin call the extract of the fittest . Aquatic Salamanders with an eel like embody were better suited to arrive in the water . and so they were able to survive and create . Whereas , salamanders who had limbs died off and were not able to throw upMusselsEvolution usually takes a very(prenominal) long time to see . This is why the mussels which have instanter become a nuisance in the Great Lakes is rather a find for scientists . Mussels nature marauders atomic number 18 steers which have the ability to snap open the muscles and crab their shells . This is an important predator prey relationship because it keeps the mussel population in check while feeding the crabs which actually act as provender for humans in the regions . The! ideas of the food and naught chains are central to the concept of evolution and the care of balance within a community and therefore within a ecosystem .

further , mussels have evolved quite rapidly an in the last 30 years scientists have been able to fete drastic changes in the muscles . These changes are exactly what Darwin would have called excerption of the fittest or natural selection . Mussels with breathed shells are now dominate in the mussel community . Why ? Because they are the all mussels to survive the polish up of a crab . cogency of the shell is built into patrimonial code or deoxyribonucleic acid which means that only mussels with hard shells survive to m ate , and reproduce . This is because mussels with soft shells are eaten by the crab and are not able to produce topic (because they are dead This is great for the mussel - happy as a clam because it can live freely now . Of bloodline this is a major get out for the crab , lake wildlife , and humans . Mussels are now able to grow out of control without a natural predator . In doing so they have devastated the water in which they live , drink up resources and food that other animals needs to survive . They are no longer...If you want to shorten a full essay, ordinate it on our website:
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