How do successful adaptations, such as the finch beaks in the illustration, become more common in a population? beaks don't provide an advantage to the individual, which increases the chances of the individual surviving and reproducing.
beaks don't provide an advantage to the individual, which increases the chances of the individual surviving and reproducing.

beaks provide an advantage to the individual, which decreases the chances of the individual surviving and reproducing.
beaks provide an advantage to the individual, which decreases the chances of the individual surviving and reproducing.

beaks don't provide an advantage to the individual, which decreases the chances of the individual surviving and reproducing.