Answer: A) Greenwich Explanation: The place which is designated as 0 degrees longitude is Greenwich, England.

Answer: A) sand and silicates Explanation: A glass is made of liquid sand. You can make glass by heating ordinary sand and made into a liquid and mix with silicates to form a glass.

Answer: A) 3 Explanation: 3 Nucleotides make up a Codon.  The nucleotide triplet that encodes an amino acid is called a codon. Each group of three nucleotides encodes one amino acid.

Answer: A) Seed Explanation: A bud is an undeveloped or embryonic shoot and may be specialized to develop flowers. Similarly, Seed is undeveloped and may be developed into a plant.   Hence, Flower : Bud :: Plant : Seed.

Answer: B) 2:3 Explanation: Let number of boys = x  , Let number of girls = yTotal numbers of students = x + y(x + y) × 15.8 = 16.4x + 15.4y 0.6x = 0.4yx/y = 0.4/0.6 = 2/3    Ratio of boys and girls in the class is 2:3

Answer: B) Gitanjali Rao Explanation: Gitanjali Rao, an 11-year-old Indian-American schoolgirl, was named as "America’s top young scientist" for inventing a cost-effective, quick lead-contamination detector in water. The seventh-grade student was inspired by the large-scale lead contamination in water in Flint, Michigan, that came to light recently.

Answer: A) Intellectual Property Rights Explanation: IPR's stands for Intellectual Property Rights. Intellectual property is the product of the human intellect including creativity concepts, inventions, industrial models, trademarks, songs, literature, symbols, names, brands,....etc.

Mercedes's language in reference to the story "Call of the Wild" actually means civilization. She had brought numerous belongings along with her and they were much more than the dogs could pull. Her decision of not parting with any of the belongings would ultimately lead to her death. One can easily draw a clear difference between civilization and wildness.