Remains

 

Remains


What are fossils?


Fossils are the preserved remnants of plants and animals. They are usually found in rocks. They are several years old. They may be the remains of living things like bones, shells, eggs, seeds and so on. Or, they may footprint or scratch marks left long ago.

Different fossils

There are different ways in which things once alive can be fossilized.

What are stromatolites?

The oldest fossils are 'Stromatolites'. They are formed by bacteria such as cyanobacteria. Some of these date back to over 3 billion years!

How does formation of fossil take place?

Most fossils form when the dead remains of animals or plants get buried in the mud. They remain buried for years and eventually turn to stone.

How can a fossil's age be found?

Scientists fell a fossil's age from the rock it is found in. They know how Ola rocks are relative to each other because layers of rock form on top of each other, so the lowest layers are the oldest. Measuring the fossil's radioactivity gives a more precise date.

Iguanodon dinosaur


In the 1820 s, fossil hunter Gideon Mantell found the fossil or the Iguanodon dinosaur. He found a fossilized claw of the Iguanodon. It was similar to that of a modern iguana (a type of lizard)only twenty times bigger!

How is it known that dinosaurs existed?

Dinosaurs existed because they left behind a huge number of their fossilized remains. For a long time, no one knew what they were. The Chinese thought they belonged to dragons. Finally, in the 1820 s, an English naturalist called William Buckland recognized them. Till date, hundreds of species of dinosaurs have been identified from fossils. Recently, a clutch of dinosaur eggs Was discovered With the babies inside.

What is the need for the geologists to study fossils?

To know the age of a rock, geologists study the fossils it contains. Many Species only lived are certain times during Earth's history. So, it a rock contains a species that dates from a certain time that dates must have formed at that time too.

What are index fossils?

Useful fossil species for dating are called index fossils. These index fossils include certain ancient kinds of shellfish called trilobites, graptolites, brachiopods, crinoids, ammonites and belemnites.

Which were the biggest dinosaurs of all?


The biggest dinosaurs were the plant-eating sauropods. They had long necks and are leaves from tall frees. Of them, biggest dinosaur may have been brachiosaurus. If was at least

What information do fossils give us?

The study of fossils tells us how plants and animals evolved on Earth. If was found that most species only lived for a short time, before being superseded by another better adapted to the conditions of the time.

 

 

 

 Thank you  guys please read and watch all my post and comment in my post. I will post important contain about today science and  useful contain in our life. Thank you so much all of you

'Best of luck'

 

 

 

 

 

 

 

 

 

 

 

 

 

Comments

Post a Comment

Popular posts from this blog

Basic in Computer/Computer Note/complete history of computer/Hardware/Software/What is Computer/How to open Computer

Basic in Computer Application                Computer is an electronic device which accept data as an input process it and finally give output & store the information for future use. 👉Full Form of Computer C- Common O- Operator M- Machine P- Particular U- Unit T- Trade E- Education R- Research 👉Software:-  Software is a set of programs, Which are designed to perform a well-defined function. A program is a sequence of instruction written to solve a particular problem. 👉Type of Software:- 1. System software:-System software is a type of computer program that is designed to run a computer's hardware and application programs. For Example:- Dos, Window, Linux 2. Application Software:- Application software is computer programs that allow users to perform specific tasks.             For Example:- Ms-Word, Photoshop, Rappid Typing, Ms-Paint. 👉What is CPU (Central Processing Unit) CPU is the brain of ...
Read more

Tiny Wonders / Atom

Image
Tiny Wonders What is an Atom?   ATOMS ARE THE VERY SMALL BITS or particles of the thing of which any substance is made. They are too small to be seen. Two billion atoms would fit on the dot that is on the top of this 'i'. Scientists earlier thought atoms were the tiniest things in the universe, like hard balls that could never be split or destroyed. But now, they know that atoms are more like clouds of energy, mostly empty space, containing even tinier sub-atomic' particles. Inside an atom At the center of every atom, there is a dense core or 'nucleus' having two kinds of tiny particles protons and neutrons. Around the nucleus, there are even tinier particles called electrons that move around at the speed of light. Size of atoms Atoms weigh about 100 trillionths of a trillionth of a gram and are about a ten-millionth of a millimeter big. The smallest atoms are the hydrogen atoms. Helium nucleus One of the smallest nuclei of an atom is that of an at...
Read more

Earth-the Wonder Planet

Image
Earth-the Wonder Planet What is Earth? The earth is one of the eight planets that continually revolve around the sun. The planets and the Sun make our solar system. The Earth is the third planet out from the Sun, located between Venus and Mars. The Earth is a sphere made largely of rock. Two-thirds of the surface is covered by water. It is the only planet with oxygen in its atmosphere. The presence of water and oxygen is what makes the Earth a suitable planet for the existence of life. How did the Earth begin?   The Earth was a clouds of gases and dust that circled around the sun about four and a half billion years ago. Then the clouds of gas started to condense and thus formed trillions of small beads. These beads then started to clump together as a single mass due to gravity. This mass is now we live on. Thus the Earth was just a ball of fire a long ago and later it got its hard crust and atmosphere due to gradual Cooling. How were the planets formed?   No-one is absolutely ...
Read more