If you build a campfire, you start with a large stack of sticks and logs. As the fire burns, the stack slowly shrinks. By the end of the evening, all that is left is a small pile of ashes. What happened to the matter that you started with? Was it destroyed by the flames? It may seem that way. What do you think happened? The truth is that the same amount of matter still exists. The wood changed not only to ashes, but also to carbon dioxide, water vapor, and other gases. The gases floated off into the air, leaving behind just the ashes. Although matter was changed, it was not created or destroyed. Because the same amount of matter still exists, we can say that matter is conserved. You may wonder how it can be conserved if something is now missing? Assume you had measured the mass of the wood before you burned it. Assume you had also trapped the gases released by the burning wood and measured their mass and the mass of the ashes. What would you find? The ashes and gases combined have the same mass as the wood you started with. This example illustrates the law of conservation of mass.

As a fire burns, what stack slowly shrinks?

The protagonist Preetam ( ( ( Ganesh , on a visit to Eva Mall amidst a heavy wind , spots a pretty girl , Nandini . While staring at her , he inadvertently falls into a manhole . Nandini rescues him from the pit , but in the process loses her heart-shaped watch she had just bought . While accompanying his mother to Madikeri , Preetam confronts a man named Jaanu . Jaanu , who has been following Nandini , beats up Preetam thinking that he is in love with Nandini . Preetam , unaware that Jaanu has vowed not to allow any one near Nandini , trashes Jaanu and his gang in return . In Madikeri , Preetam meets Nandini unexpectedly . He identifies himself and expresses his love towards her and offers to tie the watch as an indication for their marriage . Nandini , who is already engaged rejects his request . Still , Preetam vows to marry Nandini if she meets him again . In the meantime , Preetam discovers that his host in Madikeri , Col. Subbayya is Nandini's father , who is pretty much deaf , and Nandini's marriage is a just a week away . Dejected , Preetam throws Nandini's heart-shaped watch away . But Nandini calls him over the phone and taunts him to return . Delighted , Preetam goes in search of her watch and brings it back . While searching it , he spots a rabbit , Which he calls Devadas , and brings it along with him . Since Nandini's friends are due to arrive from Mumbai for the marriage , Preetam takes Nandini to the railway station . The train from Mumbai is delayed by five hours , so Nandini and Preetam decide to visit a nearby hill-temple .

Why did Preetam throw away Nandini's watch and what did she do in return?

For thousands of years, people have found fossils. The fossils caused curiosity about Earths past. How did these organisms live? What type of world did they live in? Fossils can tell us a lot about Earths history. In ancient times, fossils inspired myths and stories. These stories included tales of monsters and other incredible creatures. What type of creature do you know that could inspire such stories? Of course, dinosaur fossils were once mistaken for dragons bones. Two thousand years ago, people discovered fossils in China. At the time, they were thought to be dragon bones. We know now that these were not bones, but fossils. So what is the difference?
What questions do fossils cause humans to ask about?