Front

What is natural selection?

Back

Natural selection is the process whereby organisms better adapted to their environment tend to survive and reproduce, leading to evolutionary changes.

Front

What are the four main points of Darwin's theory of natural selection?

Back

1. Variation: Individuals in a population have variations. 2. Inheritance: Some variations are inherited. 3. Overproduction: Organisms produce more offspring than can survive. 4. Survival of the fittest: Those with advantageous traits are more likely to survive and reproduce.

Front

What is an adaptation?

Back

An adaptation is a characteristic that enhances an organism's ability to survive and reproduce in its environment.

Front

Give an example of a physical adaptation in animals.

Back

Camouflage in chameleons, which allows them to blend into their environment to avoid predators.

Front

What is antibiotic resistance?

Back

Antibiotic resistance is the ability of bacteria to survive and reproduce despite the presence of antibiotics, often due to genetic mutations.

Front

What role does food availability play in natural selection?

Back

Food availability influences which individuals survive and reproduce; those with traits that allow them to access food more effectively are more likely to thrive.

Front

What is the significance of variation in a population?

Back

Variation provides the raw material for natural selection, allowing some individuals to be better suited to their environment than others.

Front

How does pollution affect natural selection?

Back

Pollution can change the environment, affecting which traits are advantageous and thus influencing the survival and reproduction of organisms.

Front

What is an example of a behavioral adaptation?

Back

Migration in birds, which allows them to find food and suitable breeding conditions.

Front

What is the difference between natural selection and artificial selection?

Back

Natural selection occurs through environmental pressures, while artificial selection is driven by human choices in breeding.