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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.
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.
What evidence of natural selection is available today that was not available to Darwin?
organisms inherit traits
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 can you learn by comparing the fossils of an area with the organisms living there today?
in science
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.
Which group of organisms some of which were preserved as fossils in early Paleozoic rocks are still in existence today?
it should be brachiopods
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.
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 are the oldest fossil 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 makes fossils formation most likely?
Fossils fuels form when the dead remains of plants and animals compress with high pressure and heat in the course of millions of years.
According to the theory of today and acirc and 128 and 153s organisms evolved from past organisms.?
According to the theory of _____, today's organisms evolved from past organisms.
What is causing the mass extinctiong of organisms today?
What is causing the mass extinctiong of organisms today?
