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First, reproduction will happen within a specie.
Polar Bear Color Natural SelectionBy Kimberly Hung Period 4
Over time, the species will produce more offspring than they are capable of keeping alive. This is called overproduction
Soon enough, there will be random gene mutations within the species, causing variation to occur.
Hey, how come they don't look like us?
Changes in environment will cause animals that are both within and outside of the specie to compete for survival.
Environmental Change & Competition
Mmm, my dinner looks great!
Selection will occur as animals with more favorable traits have better chances of survival, and produce more offspring.
Ahh! We can't swim!
Adaptation will become evident in the population as the animals with mutations that are better suited for the environment reproduce more offspring.
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