Question: Alloying copper with tin to make bronze was first practiced about 4000 years after the discovery of copper smelting, and about 2000 years after "natural bronze" had come into general use[citation needed]. Bronze artifacts from the Vinca culture date to 4500 BC. Sumerian and Egyptian artifacts of copper and bronze alloys date to 3000 BC. The Bronze Age began in Southeastern Europe around 37003300 BC, in Northwestern Europe about 2500 BC. It ended with the beginning of the Iron Age, 20001000 BC in the Near East, 600 BC in Northern Europe. The transition between the Neolithic period and the Bronze Age was formerly termed the Chalcolithic period (copper-stone), with copper tools being used with stone tools. This term has gradually fallen out of favor because in some parts of the world the Chalcolithic and Neolithic are coterminous at both ends. Brass, an alloy of copper and zinc, is of much more recent origin. It was known to the Greeks, but became a significant supplement to bronze during the Roman Empire.
Is there an answer to this question: What is an alloy of copper and zinc?

Answer: Brass

Question: Labour has long been identified with red, a political colour traditionally affiliated with socialism and the labour movement. The party conference in 1931 passed a motion "That this conference adopts Party Colours, which should be uniform throughout the country, colours to be red and gold". Since the party's inception, the red flag has been Labour's official symbol; the flag has been associated with socialism and revolution ever since the 1789 French Revolution and the revolutions of 1848. The red rose, a symbol of social democracy, was adopted as the party symbol in 1986 as part of a rebranding exercise and is now incorporated into the party logo.
Is there an answer to this question: What color is associated with the Conservative party?

Answer: unanswerable

Question: Norfolk Island is located in the South Pacific Ocean, east of the Australian mainland. Norfolk Island is the main island of the island group the territory encompasses and is located at 2902S 16757E / 29.033S 167.950E / -29.033; 167.950. It has an area of 34.6 square kilometres (13.4 sq mi), with no large-scale internal bodies of water and 32 km (20 mi) of coastline. The island's highest point is Mount Bates (319 metres (1,047 feet) above sea level), located in the northwest quadrant of the island. The majority of the terrain is suitable for farming and other agricultural uses. Phillip Island, the second largest island of the territory, is located at 2907S 16757E / 29.117S 167.950E / -29.117; 167.950, seven kilometres (4.3 miles) south of the main island.
Is there an answer to this question: What is the name of the second worst island of the territory of Norfolk Island?

Answer: unanswerable

Question: The age of the Earth is about 4.54 billion years old. The earliest undisputed evidence of life on Earth dates at least from 3.5 billion years ago, during the Eoarchean Era after a geological crust started to solidify following the earlier molten Hadean Eon. There are microbial mat fossils found in 3.48 billion-year-old sandstone discovered in Western Australia. Other early physical evidence of a biogenic substance is graphite in 3.7 billion-year-old metasedimentary rocks discovered in Western Greenland. More recently, in 2015, "remains of biotic life" were found in 4.1 billion-year-old rocks in Western Australia. According to one of the researchers, "If life arose relatively quickly on Earth ... then it could be common in the universe."
Is there an answer to this question: Where were the 3.7 billion-year-old metasedimentary rocks discovered?

Answer:
Western Greenland