Contest alert! || Share your general knowledge week 3

Peace be upon to all my friends of this community. General knowledge is really important for us. We should try to know as possible. In this contest we will discuss about numbers of oceans in the world, gravity founder and bones in body. I am very oblige to dear friend @sahar78 for this general knowledge contest.

How many oceans are in world?

According to my little knowledge, there are five oceans located in different areas in the world, which names and details given below:
Pacific Ocean
Pacific ocean is the longest and also deepest ocean in the world. This is spread from the Arctic ocean in the north to the Southern Ocean in the south. This is bordered by Asia and Australia to the west and the Americas to the East.
Atlantic Ocean
In area wise and depth, the Atlantic icean is the second largest ocean in the world. This ocean roughly stretches from the southern ocean to the Arctic ocean in the north. America borders this on the west, and Europe and Africa border it on the east.

Freepik

Indian Ocean
This comes in 3rd number for largest ocean in world. This ocean is in India and is roughly situated between the southern ocean to the south, Africa to the west, Asia to the north and Australia to the east.
Southern Ocean
The southern ocean is also very famous. This oceans spreads Antarctica and 60 degrees south latitude that is connecting with the southern parts of the Pacific, Atlantic and Indian oceans.
Arctic Ocean
Arctic oceans is the smallest ocean in the world. This ocean is located about the Arctic region, bordered by North America, Europe and Asia.

Freepik

Which scientist developed theory of gravity?

Sir Newton is the scientist who developed the theory of gravity. His full name was Sir Isaac Newton. He introduced the universal law gravitation. In this he said,

All masses attracts to each other with a force that is inversely proportional to square of the distance between their centers and also directly proportional to the product of their masses.

Newton introduced gravity law in 1867. His theory of gravity was derived from his observations, when he used own creative calculus and the synthesis of earlier research by scientists like Johannes Kepler and Galileo Galilei.

Freepik
This idea came to Newton's mind when he was sitting in the tree of apple. After seeing a falling apple represents his idea of how objects are drawn to each other by force. He came to realize as a result that the same force that drops an apple from a tree also controls the motion of celestial bodies, like the moon as it circles the Earth.

How many total bones present in a newborn and adult?

A newborn body has total 270 bones and adult body has total 206 bones in his body at the time of birth.

Reasons
Bone Fusion:
Bone fusion is the first reason of be different numbers of bones in human body between newborn and adult body.A newborn's skeleton contains a large number of partially fused bones. For example, during a child's development, the soft patches called fontanelles that separate the bones of the skull gradually come together to form a solid skull.

Freepik

Development and Growth:
This is the second reason in bones. During growing, certain bones that start out as many pieces, unite to create a single bone. For example, the spine and pelvis are two distinct bones that eventually come together to form one skeleton.