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Where are fossils mostly preserved?
Most fossils are found in sedimentary rock, which is the most common type of rock on Earth. Sedimentary rocks form when particles of sediment are deposited by water or wind, and then hardened over time.
Why are fossils important?
Fossils are important because they provide valuable information about the history of life on Earth, helping scientists to understand how organisms have evolved and adapted over time. They also help in studying ancient environments, climate changes, and the extinction events that have shaped our planet. Additionally, fossils can provide insight into the biodiversity and ecosystems of the past, which can inform conservation efforts today.
Discuss how fossils provide evidence of change from the earliest life-forms to those alive today?
Fossils showing animals of the past display some similarity to animals of today as well as some differences. When we start at the bottom of the fossil record (where all the oldest fossils are) and work our way up through all the rock layers of the different ages in geologic time, we start to notice the changes in the fossils and how they lead up to the animals of today
How can scientists use the fossil record to provide evidence that evolution of organisms has occurred over time?
Using methods such as radioactive dating, scientists can determine the approximate age of a fossil or the rock in which it was found. Utilizing this knowledge of approximate age, scientists can compare progressive fossils, and identify changes. Changes are often minimal, and sometimes organisms do not change at all for large amounts of time, making comparative analysis of fossils a tedious task. Some eras produced better fossils than others. This can have several causes, such as particularly prolific habitation of environments that more easily produce fossils, general population booms, certain mass extinction events, and even happenstance. Because some eras produce better or more fossils, and some produce few to almost none, the fossil record can sometimes falter. In such cases, scientific investigations may be forced to fill in blanks between species using genetic analysis of preceding and proceeding species or groups within species, if the fossil(s) contain(s) any remaining genetic material. In other cases, computers will be used to recreate images of the species based on fossils, and identify progression between species. In any case, the fossil record is often used as a base off of which to obtain or recreate further information about an organism's evolutionary history.
Where was the most recent fossil found?
Fossils can be found anywhere at any time. Theyre still found today.
In addition to fossils how can scientists learn about an organisms ancestor?
Aside from fossils we can learn about organisms and how they have changed over the years by looking at the plants and animals we have today.
What geologic period has fossils that closley resemble organisms living today?
Tirtiary
Did most fossils com from dinosaurs?
Fossils exist of nearly all formerly living organisms, with some exceptions, from single celled bacteria to the largest dinosaur. Marine organisms comprise the bulk of fossils that are easily available today.
What organisms in fossils are now extinct?
99% of all organism who lived once are now extinct, so a list would be more than extensive! Dinosaurs are the big fossils. Mammal fossils are big too. Human and proto-human fossils may be the biggest things in fossils ever.
Are fossils of today's plants and animals being preserved?
Yes, fossils of today's plants and animals are being preserved. Fossils can form under the right conditions, such as in sedimentary rock or tar pits, and represent a snapshot of ancient life that can help scientists understand past ecosystems and evolutionary processes. However, the process of fossilization is rare and not all organisms become preserved as fossils.
What are the oldest fossils and what have they told us about the first organisms?
Some of the oldest known fossils are stromatolites, dating to 3.5 billion years ago. Stromatolites still exist today. They are round colonies of photosynthetic, single felled organisms without nuclei (prokaryotes).
What evidence shows that organisms living millions or years ago were different from ones living today?
Yes, if it is not then technically it's not a fossil.
Which group of organisms some of which were preserved as fossils in early Paleozoic rocks are still in existence today?
Trilobites were a group of organisms preserved as fossils in early Paleozoic rocks that are now extinct. However, some groups that were present during that time and still exist today include corals, brachiopods, and cephalopods like nautiloids.
What are non examples of fossils?
Some examples of non examples of fossils are as follows: knobby rocks, beautiful stones, bones. All fossils are rocks, and if bone fossils are found they will be much heavier than normal bone.
Why are fossils here today?
Fossils are here today because way before humans were living on land there were dinosaurs first and some people still see the fossils today from when the dinosaurs used to be here but now dinosaurs are enstinct .
What can you learn by comparing the fossils of an area with the organisms living there today?
By comparing fossils with currently living organisms in an area, you can learn about the evolutionary changes that have occurred over time, as well as how species have adapted to environmental changes. It can also provide insights into the biodiversity of the area, how ecosystems have evolved, and potentially help predict future changes in the environment.
What has happened to the majority of species whose fossils are found in rock?
The majority of species whose fossils are found in rocks are extinct. These species lived in the past but no longer exist today. Fossilization occurs when the remains of organisms are preserved in sedimentary rock over millions of years.
