LEQ
What are environmental factors?
External environment
Ex: Climate, food sources, etc.
What is the process by which modern organisms have descended from ancient organisms
Evolution
Who was the scientist that developed the theory of Evolution?
Charles Darwin
True or False: Species that have become extinct can live again on Earth
False
Once a species becomes extinct, the species was unable to produce and their genes were not passed down to another generation
What is the main idea behind the theory of Evolution
Organisms, life, and the earth change over time
What is genetic variation?
Differences in the same species
Define Adaptation
An organisms ability to ‘adapt’ or change in order to survive
What was significant about the fossils that were found in the mountains?
The seashell fossils found in the mountains suggested that the mountains were once beaches.
Earth and its landscape change over time
Natural selection states that individuals that are better adapted to their environment are (more or less) likely to survive and reproduce
More
If an organism is able to survive, then they will be able to reproduce
Which characteristic of evolution involves the differences in species, including mutations?
Genetic Variation
What is Evolution?
process of how modern organisms came from ancient ones
Change over time
Define Genetic Variation
Any difference between individuals of the same species
What was significant about the fossils of gigantic mammals that were found?
The fossils of gigantic mammals suggested that organisms looked different in the past
Organisms and life changes over time
What would happen if an organism is unable to adapt to survive in their environment
The organism would die
What are some examples of environmental factors?
Weather, climate, temperature, food, water
What is Extinction?
Complete death of a species
Any change to genetic material (or a mutated gene) is known as:
Mutation
What are some examples of environmental factors that contributed to the differences (variation) in the species found on the Galapagos Islands?
Climate (dry vs. plenty of rainfall)
Landscape (rocky vs. beaches)
Temperature (hot vs. cold)
Food sources (diverse life vs. scarce life)
If an organism dies before it could reproduce, could their genes get passed onto the next generation?
No!
Organisms need to survive in order to reproduce and pass their genes onto offspring (babies)
True or False: Evolution can lead to new species
True!
What is Natural Selection?
Organisms best adapted to their environment are more likely to survive and reproduce
Which vocabulary word means: "survival of the fittest"?
Natural Selection
What was significant about the life found on the Galapagos Islands?
The same species of animals had different characteristics depending on the island that they lived on
What do species need to do in order to survive in a changing environment?
Adapt
Adaptation is the process of organisms changing in order to survive
What is a Homologous Structure?
Structures in different species that are similar because of common ancestry are known as