বই Solutions - প্রাথমিক - সংস্কৃতি 7

a road vehicle that has four wheels, an engine, and a small number of seats for people

an electronic device that stores and processes data

(biochemistry) a chemical substance that carries the genetic information, which is present in every cell and some viruses

a source of power used for lighting, heating, and operating machines

(biology) the slow and gradual development of living things throughout the history of the earth

(physics) the universal force of attraction between any pair of objects with mass

‌a global computer network that allows users around the world to communicate with each other and exchange information

an instrument that makes looking at tiny objects or organisms possible by enlarging them which is useful in scientific studies

a type of energy generated by splitting atoms to release their stored energy

any of variation of antibiotics obtained from Penicillium moulds and used to treat or prevent a wide range of bacterial infections

the act of reproducing something by pressing an ink-covered surface against paper

a communication device used for talking to people who are far away and also have a similar device

a piece of equipment by which the far objects, particularly those in space, are made clearly visible

an electronic device with a screen that receives television signals, on which we can watch programs

any of the circular objects typically found under vehicles like cars, bicycles, buses, etc., used to make movement possible by turning

the activity or skill of making words on paper or a screen to express ideas or information

a type of powerful radiation that can go through objects or people, commonly used by doctors to see inside the body and detect any issues

a flying vehicle with fixed wings that moves people and goods from one place to another through sky