Science — English

What is the main purpose of a laboratory experiment?
The main purpose of a laboratory experiment is to investigate scientific hypotheses through controlled experimentation. By manipulating variables and observing...
Added: 25 Jan 2000
Updated: 26 Nov 2025
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What is the purpose of scientific classifications, such as taxonomy?
The purpose of scientific classifications, such as taxonomy, is to categorize and organize living organisms into structured groups based on...
Added: 25 Jan 2000
Updated: 25 Nov 2025
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What is a chromosome?
A chromosome is a long, thread-like structure made of DNA and protein that carries genetic information. Humans typically have 46...
Added: 25 Jan 2000
Updated: 22 Nov 2025
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What is the significance of the carbon cycle?
The significance of the carbon cycle lies in its role in regulating climate, supporting life, and maintaining the balance of...
Added: 25 Jan 2000
Updated: 07 Nov 2025
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What is the study of human anatomy concerned with?
The study of human anatomy is concerned with the structure and organization of the human body. It investigates various systems,...
Added: 25 Jan 2000
Updated: 03 Nov 2025
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What is a demographic transition?
A demographic transition refers to a theoretical model that describes the transition of a population from high birth and death...
Added: 25 Jan 2000
Updated: 09 Nov 2025
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What causes tides in the Earth's oceans?
Tides in the Earth's oceans are caused primarily by the gravitational pull of the moon and, to a lesser extent,...
Added: 25 Jan 2000
Updated: 15 Nov 2025
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What are fossils used for in scientific research?
Fossils are used in scientific research to provide insights into past life forms and the evolutionary history of organisms. They...
Added: 25 Jan 2000
Updated: 19 Nov 2025
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Which subatomic particle has a positive charge?
The subatomic particle with a positive charge is the proton. Protons are found in the nucleus of an atom, along...
Added: 25 Jan 2000
Updated: 06 Nov 2025
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What is the definition of thermal energy?
The definition of thermal energy refers to the energy possessed by an object due to the motion of its particles....
Added: 25 Jan 2000
Updated: 15 Nov 2025
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What is a chemical reaction?
A chemical reaction is a process in which substances, known as reactants, are transformed into different substances called products. During...
Added: 25 Jan 2000
Updated: 26 Nov 2025
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What is the process by which plant cells maintain turgor pressure?
The process by which plant cells maintain turgor pressure is primarily through the accumulation of water in the central vacuole....
Added: 25 Jan 2000
Updated: 20 Nov 2025
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What is gravitational potential energy?
Gravitational potential energy is the energy an object possesses due to its position in a gravitational field. It is calculated...
Added: 25 Jan 2000
Updated: 19 Nov 2025
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What is the difference between speed and velocity?
The difference between speed and velocity lies primarily in the inclusion of direction. Speed is a scalar quantity, representing how...
Added: 25 Jan 2000
Updated: 19 Nov 2025
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What is the role of the nervous system?
The role of the nervous system is to transmit and process information throughout the body, coordinating responses to internal and...
Added: 25 Jan 2000
Updated: 15 Nov 2025
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How do plants obtain nutrients from soil?
Plants obtain nutrients from soil primarily through their roots. The roots absorb water, dissolved minerals, and essential nutrients, including nitrogen,...
Added: 25 Jan 2000
Updated: 22 Nov 2025
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What is an antibiotic?
An antibiotic is a type of medication designed to kill or inhibit the growth of bacteria, thereby treating bacterial infections....
Added: 25 Jan 2000
Updated: 01 Nov 2025
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What does the term “population density” refer to?
The term "population density" refers to the concentration of individuals within a given area, often expressed as the number of...
Added: 25 Jan 2000
Updated: 19 Nov 2025
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What organelle is responsible for protein synthesis?
The organelle responsible for protein synthesis in cells is the ribosome. Ribosomes can either be found freely floating in the...
Added: 25 Jan 2000
Updated: 25 Nov 2025
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What is an ion?
An ion is an atom or molecule that has gained or lost one or more electrons, resulting in a net...
Added: 25 Jan 2000
Updated: 04 Nov 2025
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