Differences within a population which can be inherited.
What is Variation
Brown and yellow butterflies
What is variation
Over production of offspring leads to _____ for survival.
What is competition
What is number 3?
What is adaptations.
Over many generations, there is a change in the distribution of traits.
What is Evolution
The number of brown butterflies in the population increases after many generations.
What is Evolution
There is a genetic _____ within a population which can be inherited.
What is variation
What is number 1? 
What is variation.
What natural selection has species tend to produce far more offspring than the environment can support.
What is Competition.
The birds are selecting the easiest butterflies to eat allowing the dark butterflies to survive more often.
What is Adaptation
Over many generations, there is a change in ______.
What is evolution
What is number 4?
What is evolution.
Individuals with beneficial traits will be more likely to survive and pass on their genes.
What is Adaptation
Too many butterflies are born that can survive.
What is competition
Individuals with beneficial _____ are likely to survive to pass on their genes
What is adaption.
What is number 2?
What is competition.