Evolution 1
A group of the same species living in the same place at the same time.
Population
A characteristic of an organism that can be inherited.
Trait
The types of food present in an environment that affect which traits are helpful.
Food Availability
The gradual change in a species over time
Evolution
Different versions of genes within a population that create trait differences.
Genetic Variation
A change in the environment that affects survival.
Environmental Change
A trait that helps an organism survive and reproduce in its environment.
Adaptation
The time between when organisms are born and when they reproduce.
Generation
Living long enough to reproduce
Survival
The process where organisms with helpful traits survive and reproduce more than others.
Natural Selection
An environmental factor that affects survival.
Selection Pressure
Producing offspring that inherit traits.
Reproduction
Differences in traits between individuals in a population.
Variation
How common a trait is in a population.
Trait Frequency
The size and shape of a bird’s beak, which affects what food it can eat.
Beak Size