Evolution
Darwin's Theory
Biodiversity & Extinction
Vocabulary
N/A
100
A change over time.
What is Evolution?
100
He was a naturalist - a person who observes and studies the natural world.
What was Charles Darwin?
100
The number of different species in an area.
What is biodiversity?
100
Segments of DNA that define certain characteristics in an organism.
What are genes?
200
How living things descended from earlier organisms.
What is the scientific theory of evolution?
200
Where was the ship Beagle" traveling to?
It was traveling to Galapagos Island.
200
The larger an area of an ecosystem, the more _______.
- Species.
200
Any difference between individuals of a same species.
What is variation?
300
What is one of the evidence that supports evolution?
Possible answers : Fossils, similarities in DNA, similar body structures, and patterns of early development.
300
That species change over many generations and became better adapted to new conditions.
What was Darwin's hypothesis?
300
The biodiversity of an ecosystem can also be affected by _______.
- Extinction.
300
Species that can become endangered in the near future.
What are threatened species?
400
How and when a new species evolved and how organisms are related.
What is the fossil record?
400
What happens when offsprings are overproduced?
What happens is that there are not enough resources like food or water for all of them.
400
What are some factors that affect biodiversity in an ecosystem?
Possible answers : area, climate, genetic diversity, and diversity of niches.
400
The process by which individuals that are better adapted to their environment are more likely to survive and reproduce.
What is natural selection?
500
The more similar the DNA sequence, the more ________ .
- Closely related the species are.
500
How does genetic variation contribute to the diversity of organisms?
It contributes by making some individuals better adapted to their environment and giving them helpful traits and characteristics.
500
Extinction usually occurs when a species is __________.
- Unable to adapt to its environment.
500
Similar structures that related species have inherited from a common ancestor.
What is homologous structures?
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