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A bicycle, often referred to as a bike, is a human-powered vehicle that consists of two wheels, a frame, pedals, and handlebars. Bicycles are a popular and environmentally friendly mode of transportation and a versatile means of recreation and exercise. Here are some key components and information about bicycles:

Frame: The frame is the main structure of the bicycle, typically made of metal (steel, aluminum, titanium, or carbon fiber). It provides support for all the other components.

Wheels: Bicycles have two wheels, usually of equal size. They are typically made of lightweight materials like aluminum or carbon fiber and are equipped with tires for grip and shock absorption.

Pedals: Pedals are where the rider’s feet are placed, and pedaling provides the power to move the bicycle forward.

Chain: The chain transfers power from the pedals to the rear wheel, propelling the bicycle forward.

Gears: Most bicycles have multiple gears, controlled by a gear shifter. Gears allow the rider to adjust the level of resistance and choose the appropriate gear for various terrains and riding conditions.

Handlebars: Handlebars are used for steering and are typically equipped with brakes and shifters for gear changes. There are different types of handlebars, including drop bars, flat bars, and more, each suited for different riding styles.

Brakes: Brakes are essential for stopping the bicycle and can be either rim brakes or disc brakes, depending on the bike type and design.

Saddle (Seat): The saddle is where the rider sits, and it’s typically adjustable to suit the rider’s height and comfort.

Forks: The front fork connects the front wheel to the frame and provides stability and control.

Accessories: Bicycles can be customized with various accessories such as fenders, lights, racks, and water bottle holders to enhance their functionality.

Bicycles are popular for various purposes, including commuting, recreational riding, racing, touring, and mountain biking. They are an eco-friendly alternative to motorized transportation, promote physical fitness, and are widely used for exercise and leisure. There are various types of bicycles designed for specific activities, such as road bikes, mountain bikes, hybrid bikes, and more, each tailored to suit different riding conditions and preferences.