Living Environment: Evolution Review

Front

What is a species?

Back

A species is a group of organisms that have similar characteristics and can reproduce with one another.

Front

What evidence do scientists use to support the idea of common ancestry?

Back

Scientists compare the limbs of different organisms, which often have the same basic structure, to find evidence of common ancestry.

Front

What are the five important parts of Natural Selection?

Back

1. Overproduction 2. Variation 3. Competition 4. Survival of the fittest 5. Inheritance

Front

Which layer of rock is typically the oldest?

Back

The oldest layer is usually the bottom layer, often referred to as layer 4.

Front

What is extinction?

Back

Extinction is when all members of a species have died.

Front

What is natural selection?

Back

Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is adaptation?

Back

Adaptation is a trait that helps an organism survive and reproduce in its environment.

Front

What is variation in the context of evolution?

Back

Variation refers to the differences in traits among individuals in a population.

Front

What does 'survival of the fittest' mean?

Back

'Survival of the fittest' refers to the idea that individuals best suited to their environment are more likely to survive and reproduce.

Front

What is a vestigial structure?

Back

A vestigial structure is a body part that has lost its original function through evolution.