Questions

Convection is the mode of heat transfer which involves bulk motion of a fluid to transfer heat. Energy transfer by convection is primarily restricted to fluids. Fluids can be both liquids and gases.

All the carbon atoms in glucose ultimately incorporated during cellular respiration into carbon dioxide molecules.

Vitamin B12 is the only water-soluble vitamin that can be stored in the liver for many years. There are 9 water soluble vitamins.

Valentina Tereshkova was the first woman to walk on the moon.

In the middle of the 6th centuryB.C, a powerful empire was established in Iran this empire which lasted over two centuries is known as the Achaemenid Empire. The founder of this Empire was Cyrus with his capital at pasargadae. In 539 B.C, cyrus defeated the Babylonians and extended his empire over a vast territory up to Asia Miner. His successor was Darius I (522-486 B.C).

The organs protected by the thoracic cage include the lungs and the heart.

The US state California's  economy has surpassed that of the UK to become the world’s fifth largest, according to new federal data released.

With a GDP of $2.7 trillion, California is now only behind the US, China, Japan and Germany.