Why are fossils rare in Precambrian rocks? Why do minerals in metamorphic rocks often rearrange in layers? How are rocks and minerals alike? How does pollution affect the rock cycle? What are three ways that minerals are used? How is a soil map and geologic map useful?
What is the main criterion for classifying chemical sedimentary rocks? On what basis are sedimentary rocks identified? How can you distinguish a clastic fragmental sedimentary rock? How does a sedimentary rock become an igneous rock? How are fossils found in sedimentary rocks?
Advances in technology have made it possible to date objects and materials so it is only off by a few decades, at most. How is carbon-14 used to date fossils? All living things absorb carbon from the atmosphere, including an amount of radioactive carbon-14. When a plant or animal dies...
Fossil fuels are possible fuel sources that are carbon-based, such as petroleum and natural gas. These are considered nonrenewable resources, as they take millions of years to form. Answer and Explanation:1 Fossil fuels form when organic material, from plants and animals, gets exposed to pressur...
Freezing, drying and encasement, such as in tar or resin, can create whole-body fossils that preserve bodily tissues. These fossils represent the organisms as they were when living, but these types of fossils are very rare. Most organisms become fossils when they're changed through various othe...
There were other clues as well; matching rocks and fossils were found in countries separated by the Atlantic and Indian oceans. Tropical plant fossils were also found in southern polar regions (and vice versa), indicating that the continents of planet Earth might not have always been in their ...
For comparison, the Milky Way galaxy that contains the solar system is approximately 13.2 billion years old, while the universe itself has been dated to 13.8 billion years. Additional resources Find out where the oldest rocks in the United States are located. Learn more about the oldest rocks ...
The oldest known fossils, in fact, are cyanobacteria from Archaean rocks of western Australia, dated3.5 billion years old. This may be somewhat surprising, since the oldest rocks are only a little older: 3.8 billion years old! Who is the oldest historical figure?
This is an interesting and intimate questions. In my case it was thanks to my father. I told my parents, very young, each time walking the countryside or the beach, always came home with pockets full of stones, especially if they were brilliant (mainly quartz and opals polished by the se...
Why are fossils found in sedimentary rocks? How do scientists study coprolite? How are fossils dated using radiometric dating? Why are fossils a useful tool in relative dating? How can coprolites help scientists learn about dinosaurs? Why are trilobites good index fossils?