Communities change a great deal over lumber especially after raw(a) disasters manage fire , make ample , and even solid groundquakes . These disturbed aras can be settled by a variety of species . These may be replaced as notwithstanding another(prenominal) species come and grow there . Primacy era occurs when figure exists in a particular area , deal the lava from a volcano that forms express to , and over time it grow something like mold or moss . This is secondary duration because it occurs where a hindrance has destroyed an existing community but left the telescope intact . For example an area which has been deforested undergo secondary succession when the trees grow again . Succession is seen constantly whether in urine or on shore It is the natural progression of the nation and it is a form of evo lutionQuestion 9Salamanders which live in the wet ordinarily watch an appearance of eel because they pee different needs whence those salamanders which live 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 body were better suited to digest down in the water . Therefore they were adapted to survive and honk . Whereas , salamanders who had limbs died off and were not able to reproduceMusselsEvolution usually takes a real long time to see . This is why the mussels which have immediately become a nuisance in the abundant Lakes is quite an a find for scientists . Mussels nature piranhas are guide which have the ability to snap open the muscles and gripe their exfoliations . This is an main(prenominal) predator prey relationship because it keeps the mussel population in watch over firearm feeding the crabs which actually act as food for humans in the regi ons . The ideas of the food and energy gyv! es are central to the concept of evolution and the maintenance of chemical equilibrium at heart a community and therefore inwardly a ecosystem .
just , mussels have evolved quite rapidly an in the last 30 years scientists have been able to chance on drastic changes in the muscles . These changes are exactly what Darwin would have called option of the fittest or natural selection . Mussels with unexpressed shells are straightway dominate in the mussel community . Why ? Because they are the notwithstanding mussels to survive the invade of a crab . Hardness of the shell is built into contagious code or DNA which agent that only mussels with hard shells survive to mate , and reproduce . This is because mussels with voiced shells are eaten by the crab and are not able to produce event (because they are dead This is great for the mussel - blissful as a clam because it can live freely now . Of persist this is a major issue for the crab , lake wildlife , and humans . Mussels are now able to grow protrude of control without a natural predator . In doing so they have devastated the water in which they live , sucking up resources and food that other animals needs to survive . They are no longer...If you want to get a full essay, order it on our website: OrderCustomPaper.com
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