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What is the difference between trace fossil and index fossil?
A trace fossil is one that merely indicates that an organism left evidence of its existence. Some examples would be burrows or footprints that appear in sedimentary rock. An index fossil is of an organism that dates to a particular time in the geologic record, the organism only appearing in a certain segment of that record. Index fossils are indicators of the age of the rock in which they are found.
What is the age of the oldest fossil on record?
The age of the oldest fossil on record is about 3.5 billion years old.
Where in the fossil record can you find fossils of the oldest life forms?
The fossils of the oldest life forms can be found in the Precambrian period of the fossil record.
Why is the fossil record unable to provide a full portrait of the times in which the fossilized animals and plants lived?
The fossil record is incomplete because not all organisms fossilize, and not all fossils are found or preserved. Fossilization depends on specific conditions such as rapid burial and mineralization. Therefore, the fossil record only represents a small fraction of the organisms that lived in the past.
Once an organism disappears from the sequence of rock layers it becomes extinct?
A fossil is proof that an animal existed at one time, leaving evidence in rock. If that fossil does not appear in successive layers, there is no proof that the organism existed beyond its fossil record, and it is considered to have gone extinct.
Which organism would have the best chance of becoming part of the fossil record?
Which of the following is most likely to become preserved as a fossil? a jellyfisha clam shella leafa worm
What is the evidence of an organism from more than 10000 years ago?
The fossil record.
What are two things that scientists learn from the fossils record?
The fossil record provides evidence about the history of life and past environment on earth. The fossil record also shows that different groups of organism have changed over time.
Why is the fossil record incomplete?
The fossil record is incomplete because fossilization is a rare process that requires specific conditions to preserve an organism's remains. Factors such as decay, scavenging, and geological processes can also contribute to the gaps in the fossil record. Additionally, not all organisms have hard parts that can fossilize, further limiting the representation of past life.
Is a sedimentary rock a fossil?
A fossil is any record of an organism preserved in rock, whether it be igneous, sedimentary, or metamorphic. Nearly all fossils are discovered in sedimentary rock.
What is the definition of range of a fossil species?
The range of a fossil species refers to the span of time during which the species existed on Earth. It is determined by the oldest and youngest known occurrences of that species in the fossil record. The range provides information about the species' period of existence and can be used to study evolution and environmental changes over time.
What is the chronological collection of life's remains found in layers of rock?
The answer is the fossil record :D
How the fossil record indicates a long history of changing life forms.?
The fossil record shows that different species have evolved over time. The fossil record also provides evidence of how a specific organism evolved from earlier species. The fossil record shows that organisms have become more complex over time. It also shows which organisms lived during the same time period, which have a common ancestor, and which have become extinct.
An organism becomes a fossil after it what?
An organism becomes a fossil after it is buried by sediment and undergoes a process called fossilization. This involves the deposition of minerals that replace the organic material of the organism, preserving its structure. Over millions of years, the remains may become rocks or minerals that retain a record of the organism.
What is the difference between trace fossil and index fossil?
A trace fossil is one that merely indicates that an organism left evidence of its existence. Some examples would be burrows or footprints that appear in sedimentary rock. An index fossil is of an organism that dates to a particular time in the geologic record, the organism only appearing in a certain segment of that record. Index fossils are indicators of the age of the rock in which they are found.
What are two things the paleontologists can learn from fossils?
1. When that animal/plant lived. 2.What killed that animal/plant.
The fossil record shows that periods of blank are followed by diversity in organism?
The fossil record shows that periods of extinction are followed by bursts of diversity as new species evolve to fill vacant ecological niches. This pattern is known as adaptive radiation.
