four dangerous sharks

Great white shark

This is scary predator.It does not like the teste of humans,but it attacked human many times

Hammerheadshark

It is a species with widly spaced eyes.It often makes unpredictadle attacks

Tiger shark

It is often found at coastal areas and it attacks people

Blue shark

This is widly spread allover the world it commonly circles the pray before attacking

advantages and disadvantages of cigarettes

advantages of cigarettes
smoking helps to avoid knee pain and knee sugery.
smoking helps to reduce cold.
smoking helps to avoid parkinson's disease.
smoking helps to reduce obisity.
smoking gives relasation to our mind

disadvantages of cigarettes
smoking causes cancer.
smoking causes heart disease.
smoking causes breathing problem.
smoking allows carbon monoxide enter our body.
smoking causes strokes.

Ancient americans

The Maya and aztecs of central Americans and the incas of peru developed the remarkable cultures that were swept away by spanish invaders in the 1500's.They were the final witnesses to the long history of  human civilization in ancient americe. 

How fossils are formed

For a dead animal to become fossile it need to be buried quickly.By falling into muddy water bed or by  strom etc.

The soft tissue of the animal rots away but the skeleton remains and turn into rocks after millions of years 

Over time the mud and river sediments build up over the fossils and form into sedimentary rocks

Because of erosion and movements in the Earth's crust can expose it.A Palaeontologist can find it easily

 

PALAEONTOLOGIST - a person who study about rocks,fossils and prehistory

feathers of bird

Feathers helps the birds to keep their body warm and it also help them to fly.Their wings are equipped with stiff flight feather to provide both lift and, when the wings are flopped, forward thrust to propel thse masters of flight through the air something else common to all bird is that they lay egg with hard egg
 Australian lyrebirds are fantastic mimics.They copy not only other bird songs to attract mates, but also mobail phone ring tone,camer shutters,crying babies even car alarm
     

tips to reduse hair fall

use natural oils like cocunut,olive,canola apply it on your hair use less shampoo. Dont use hair drier.use jucies like garlic,onion,ginger juicies on head over night.Eat food which has lot of antioxidant take green tea.practice meditation because hair may fall because of stress and tension Take fruites like Apple,Grapes,lemon,dragon fruite
FRUITES WHICH HAS ANTIOXIDANT

onion

The onion is actually a bulb or a very big bud.The bulb comprises fleshy layers of modified leaves surrounded by papery outer layer onions are used in many dishes.They have a distinctive strong flavour and pungent odour.Onion have medical uses too.


onion make us cry when we cut it this is because of amino acid present in the onion cell.when we cut it the amino acid escape in the form of gas.The gas react with water in our eye and form sulfuric acid.this sting the sensitive nerve of our eye and cause tears