Answer: B) Book Explanation: A book has a spine to hold all the pages, but it has no bones.

Answer: A) appositional growth Explanation:

Answer: C) Antarctica Explanation: Africa - 54 countries South America - 12 countries Antarctica - 0 countries Europe - 43 countries.   Hence, Antarctica continent has the least countries.

Answer: C) Letters Explanation: We know that, a folder holds documents in the same way an envelope holds letters.   Hence, Folder : Document :: Envelope : Letter.

Answer: B) Sir Francis Drake Explanation: Sir Francis Drake was the first Englishman to sail around the world.

Answer: B) 8 Explanation: The easiest way would measure it through half a liter water bottle. There are approximately 16.9 ounces(oz) of water in a 500ml water bottle.   Gallon is an imperial customary volume unit for the U.S.   As we have previously mentioned, the 16.9oz bottle is also known as 500ml in the metric system. According to U.S. standard, 1 gallon stands for 128 fluid oz.   Hence, Number of bottles in 1 gallon = 128/16.9 = 7.57 =~ 8.

Answer: A) Air Explanation: Light travels fastest in Vacuum. The fastest thing in the whole universe is the speed of light in a vacuum like outer space. It is about 2.99 x 108 m/s.

Answer: A) DNA Explanation: The inherited traits of an organism are controlled by DNA molecules.   The traits an organism displays are ultimately determined by the genes it inherited from its parents, in other words by its genotype. Animals have two copies of all their chromosomes, one from each parent.