Study of physical world: the study of the physical and natural world and phenomena, especially by using systematic observation and experiment.
- The science and study of life and of plant, animal, and other types of organisms. The science of life and living organisms, biology studies the form, structure, function, growth and development, behavior and interaction of all living things. Biologists study the characteristics of life forms, such as their cellular organization and development, how they respond to stimulation, the chemical processes of their growth and production of energy (metabolism) and how they reproduce.
- It is the study of motion, energy, matter, electricity, magnetism, space, and time. It helps people understand how objects move, how they bend, how they make noise, how hot or cold they will be, whether they can make light, and what they are made of at the smallest level.
- The science that deals with the properties of organic and inorganic substances and their interactions with other organic and inorganic substances. In the study of matter, chemistry also investigates the movement of electrons. Because of the diversity of matter, which is mostly composed of different combinations of atoms, chemists often study how atoms of different chemical elements interact to form molecules and how molecules interact with each other.