English naturalist (1809-82), considered the father of
evolution. Darwin voyaged aboard the Beagle to see the wonders of South America.
After his return to England, he proposed a mechanism for evolution -- natural selection.
D arwin noted that successful species produce more offspring in each generation
than are needed to replace the adults who die. Not all offspring survive. Some creatures
or plants struggle to survive. Many things affect an individual's chances of survival,
including its ability to obtain enough food and avoid being killed. Sometimes there
are differences which may make it easier for an individual to survive long enough
to reproduce. The species would thus have changed or evolved to favor traits that
favor survival and reproduction. Darwin called this process "natural selection",
as explained in his book "On the Origin of Species" in 1859.
medical
dictionary, online medical dictionary, medical
terminology dictionary, free online medical
dictionary, medical dictionary, online medical
dictionary, medical terminology dictionary, free
online medical dictionary, dictionary medical,
dictionary medical online, dictionary medical
terminology, dictionary free medical online,
dictionary free medical, dictionary medical
terms, dictionary drug medical medicine,
dictionary health illustrated medical nursing
profession stedmans, dictionary English medical,
dictionary medical online terminology,
dictionary encyclopedia medical online,
condition dictionary medical, dictionary
medical, dictionary drug medical, medical
dictionary software, cyclopedic dictionary index
medical tabers thumb, medical dictionary, online
medical dictionary, medical terminology
dictionary
