Remains of organisms that has been preserved in rocks.
Other
Please Specify:
Geological times
Period, Era, Eons
Era, Mesozoic, Pre-Cambrian
Cambrian, ordovician, period
Eon, Era, Period, Archaen
What are the remains of living organisms called?
Strata
Fossil
Evolution
Mineral
According to the fossil record, 99% of organisms that lived on Earth are......
Extinct
Surviving
Mutating
Endangered
Evidence for past events that have occurred during Earth’s ancient history is recorded in:
History books
Clothes people wore.
Written timelines
Fossils within rocks
5 The fossil record supports Darwin’s theory of evolution by demonstrating that plants and animals:
Are the same in various environments
Remain unchanged until extinction.
Existed for only a few thousands of years
Have changed over time
Scientists have discovered fossils of whale ancestors that have well developed hip and thigh bones, which are typically used for walking by mammals. Modern whales most likely evolved from ancestors who:
Evolved on land and remained on land.
lived in the sea, then became better adapted for land
lived on land, then became better adapted for the sea
Evolved in the sea and remained in the sea
In order to determine the relative age of fossils, scientists may use a type of fossil known as a(n):
index fossil
radioactive fossil
relative fossil
absolute fossil
Radiometric dating occurs by calculating the ratio between the original amount of radioactive isotopes present and the amount now remaining.
True
False
The shortest time interval on the geological timescale is called an epoch.
True
False
Palaentologist is a scientist that studies ancient life forms through fossils.
True
False
When a large number of organisms die out on a large scale it is called extinction
True
False
Rocks made of layers of sand deposited over time as a sediment
Sedimentary rock
Igneous rock
� evidence of the activity of an organism preserved in rock, but not the organism itself
Fossil fuel
Fossil traced
Trace fossil
Layers of rock
Sediments
Strata
Swamps
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