All atoms of an element have the same number of protons. The number of protons in an element is a primary identifier known as its atomic number. The number of electrons is the same as the number of protons.

The minimum age for getting a learner's license as per the government rules is 16 years.

Most of the water in the body will be lost by kidneys in the form of urine.

An improvement in technology would shift the supply curve rightward.

If the price of a product rises, the demand for the substitute product increases.

DNA is not a single stranded and does not have amino acids. Hence options, b & C are eiminated. Dna is a double helix structure containing nucleobase—either cytosine (C), guanine (G), adenine (A), or thymine (T)—as well as a monosaccharide sugar called deoxyribose and a phosphate group. 

The classical orchestra uses violin, flute, clarinet, cello, piccolo, Bass,...

The Berlin conference in 1884 was significant because it created rules on how European nations want to colonize Africa.