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Evolution Human Family Tree (Extinction (Evolutionary pressures can also…
Evolution Human Family Tree
Geologic Time Scale
Natural Selection
In a family, there are differences (variations)
Charles Darwin learned that all living things have a common anccestor
Natural selection explains how life started
Natural selection is the same thing as survival of the fittest
Organisms that fit there environment the best will survive and reproduce
Natural selection causes evolution
Fossils
Not everything becomes a fossil
A body fossil is part of the living thing
Fossil is the remains of a once living thing.
There are other types of fossils such as trace, mold, and cast
Oil and gas comes from fossils
Over millions of years, plants are decomposed into fossil fuels.
Australopithecus Group
Most of there fossils were found in South Afrixa
Plant Adaptation (Jr)
Plants adapt to get sunlight by growing towards the sun
Plants adapt to reproduce by spreading their seeds (pollen)
Plats adapt to get water by having roots underground
Plants adapt to get nutrients by getting soil, animals, and other plants
Living things need to adapt to meet their needs
Paranthropus Group
They lived 2.3-2.7 million years ago
Human Evolution
Humans are primates
Humans and apes share a common anncestors
Paleontologist found fossils of past Humans
The oldest human fossil was found in Africa
Modern humans are homo sapiens (wise human)
Humans adapted to have larger brains, use tools, taller, and create communities.
Charles Darwin
Charles Darwin came came up with the theory of evolution
He traveled and learned about many plants and animals to observe their differences
On the islands, he observed that the animals were different, based on their location
He disagreed with other scientist, because he believed evolution takes a long time to happen.
He wrote a book called the "The Origin of Species"
The theory of evolution is supported by lots of evidence, including genetics and hereditary
Extinction
Evolutionary pressures can also lead to extinction
Climate change can lead to the extinction of species
99% of all living things have gone extinct
Extinction is when the whole species dies out
About 65 million ago, all dinosaurs went extinct
Human activities effect the environment, which can cause the extinction of many species
Ardipithecus Group
They are most relate to primates
Flu and Flu Vaccine
The Flu virus can cause symptom, such as a fever
Spanish Flu killed a number of people
Vaccines are used to fight off viruses
There are different strains (versions) of the virus
Flu is caused by a virus
Viruses can mutate and evolve
