1. Natural Selection Four factors:
the process whereby organisms better adapted to their environment tend to survive and produce more offspring.
Four factors:
1) Overpopulation: more offspring are born than can survive
2) Variation: individuals of a population have differences
3) Adaptation: Some variations allow a better chance of survival
4) Descent w/ modification: Those with advantages will reproduce and make more of the population

2. Examples of Natural Selection

3. Selective Breeding Decide which characteristics are important
is the process by which humans breed other animals and plants for particular traits.
How does Selective Breeding work?
Decide which characteristics are important
Choose parents that show these characteristics
Select the best offspring from parents to breed the next generation
Repeat the process continuously

4. Examples of Selective Breeding
Wheat
Producing disease-resistant wheat by crossbreeding wheat plants with disease resistance and wheat plants with a high yield.
Dairy cattle
Increasing milk yield by selecting bulls from high yield herds and breeding them with cows that have the best milk production.
Cattle breeds
The Angus bulls are selectively bred for beef.