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Oxygen is needed for a human to be able to breathe. Oxygen is essential for the process of respiration, where it is taken in by the lungs and transported to the cells in the body. In the cells, oxygen is used in cellular respiration to produce energy in the form of ATP. Without oxygen, cells cannot function properly, leading to various health issues and eventually death.

Eating 4 meals per day is suggested to stay fit. This is because having regular meals throughout the day helps in maintaining a steady metabolism and prevents overeating. It also ensures a consistent energy level and provides the body with necessary nutrients. Eating smaller, balanced meals at regular intervals can help in controlling hunger, maintaining weight, and promoting overall well-being.

Cooking is not considered a science because it is primarily an art form that involves creativity, personal preference, and cultural influences. While there are scientific principles involved in cooking, such as the chemical reactions that occur during cooking processes, it is not classified as a science in the same way that physics, economics, and accounting are. Physics is a natural science that studies matter, energy, and their interactions. Economics is a social science that analyzes the production, distribution, and consumption of goods and services. Accounting is a discipline that deals with the measurement, processing, and communication of financial information.

The given expression, 2(x+1)-5, can be simplified by applying the distributive property. Multiplying 2 with each term inside the parentheses gives 2x + 2, and then subtracting 5 gives the final simplified expression of 2x - 3.

Norse is not a Latin language because it belongs to the North Germanic branch of the Germanic languages, while the Latin languages are derived from Latin, a classical language of the Roman Empire. Norse was spoken by the Norse people in Scandinavia during the Viking Age and later evolved into the modern Scandinavian languages such as Danish, Swedish, and Norwegian.

Whale is not a fish because it is a mammal. Unlike fish, whales breathe air, give birth to live young, and nurse their offspring with milk. They belong to the group of marine mammals called cetaceans, which also includes dolphins and porpoises. Whales have lungs instead of gills and are adapted to live in water but they are not classified as fish.

A bagel is not a French pastry. While croissant, baguette, and crepes are all traditional French pastries, bagel is a type of bread product that originated in Jewish communities in Poland. It is traditionally shaped by hand into a ring shape, boiled, and then baked. Bagels have a dense and chewy texture, different from the flaky and buttery texture of French pastries like croissants.

Egypt does not have a tempered climate because it is located in a desert region, specifically the Sahara Desert. The country experiences hot and dry weather for most of the year, with very high temperatures during the summer months. It lacks the moderate and mild climate that is typically associated with temperate regions.

The term "political capital" refers to a city that serves as the center of a country's government and political activities. It is where the government institutions are located and where important political decisions are made. This term is used to distinguish the capital city from other cities in the country that may have different roles, such as being the main economic or administrative center. Therefore, "political capital" is another word for a capital city.

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