What is the difference between background extinctions and mass extinctions?
Background extictions happen whan an organism goes extinct because it is no longer able to thrive in the ecosystem. Mass extinction events are large events.
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15
If you have CO2 present in your sample, what does that indicate?
CO2 is connected to temperature. High CO2 levels indicate warm climates.
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15
You just found traces of plant life in your sample. What does this indicate?
Warm climate.
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15
Why are most fossils invertebrates?
Invertebrates often have shells or exoskeletons that preserve well, also more than 95% of all organisms today are invertebrates.
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15
What is the rock cycle?
The rock cycle is a model that describes the formation, breakdown, and reformation of a rock. Sedimentary, igneous, and metamorphic are the 3 rocks groups.
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15
Why are sedimentary rocks the only type of rock to contain fossils?
The movement of weathering rock will cover an organism and preserve the imprint or hard remains. Igneous and metamorphic rock have too much heat and pressure.
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15
Explain why geologists, paleontologists and other members of the scientific community use relative dating so often?
Relative Dating is cheaper and you may apply it at the site of discovery, this method is regularly used by geologists for most purposes.
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15
Earthquakes are created for this type of boundary.
Transform Plate Boundary.
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15
What is an intrusion?
When magma cools inside the fault of the Earth.
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15
What are the four types of boundaries discussed?
Divergent, convergent- collisional, transform, and convergent-subduction.
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15
What is an adaptation?
An adaptation is a physical trait of an organism that aids in its chances of survival, increases the organismโs โfitnessโ to survive in its environment.
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15
What creates volcanoes?
Subduction
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15
When is the earliest evidence of life? What type of life is it?