Science — English

What is the purpose of stomata in plants?
Stomata are small pores found on the surfaces of leaves that allow for the exchange of gases, primarily carbon dioxide...
Added: 25 Jan 2000
Updated: 15 Nov 2025
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What is the primary purpose of the scientific method?
The primary purpose of the scientific method is to provide a systematic approach for investigating natural phenomena. It involves several...
Added: 25 Jan 2000
Updated: 03 Nov 2025
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What is a hypothesis in scientific research?
A hypothesis in scientific research is a testable statement or prediction regarding a relationship between two or more variables. It...
Added: 25 Jan 2000
Updated: 05 Nov 2025
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What is the greenhouse effect?
The greenhouse effect is a natural phenomenon that warms the Earth’s surface. It occurs when greenhouse gases, such as carbon...
Added: 25 Jan 2000
Updated: 06 Nov 2025
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What process involves the conversion of a solid directly into a gas?
The process that involves the conversion of a solid directly into a gas without passing through the liquid phase is...
Added: 25 Jan 2000
Updated: 11 Nov 2025
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What is the primary function of the mitochondria?
The primary function of the mitochondria is to generate adenosine triphosphate (ATP), the primary energy currency of the cell. Often...
Added: 25 Jan 2000
Updated: 20 Nov 2025
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Which organ is responsible for filtering blood in the human body?
The organ responsible for filtering blood in the human body is the kidneys. These two bean-shaped organs are located on...
Added: 25 Jan 2000
Updated: 27 Nov 2025
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What part of the brain is responsible for regulating temperature?
The part of the brain responsible for regulating temperature is the hypothalamus. Located in the diencephalon, the hypothalamus acts as...
Added: 25 Jan 2000
Updated: 01 Nov 2025
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What type of electromagnetic radiation is used in microwave ovens?
The type of electromagnetic radiation used in microwave ovens is microwave radiation. These microwaves typically operate at a frequency of...
Added: 25 Jan 2000
Updated: 11 Nov 2025
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What is the principle of conservation of mass?
The principle of conservation of mass states that mass in a closed system cannot be created or destroyed; it can...
Added: 25 Jan 2000
Updated: 23 Nov 2025
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What is the function of chlorophyll in photosynthesis?
The function of chlorophyll in photosynthesis is to absorb light energy, primarily from the sun. This green pigment is located...
Added: 25 Jan 2000
Updated: 27 Nov 2025
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What process is responsible for the movement of tectonic plates?
The process responsible for the movement of tectonic plates is known as plate tectonics. This theory describes the large-scale motion...
Added: 25 Jan 2000
Updated: 27 Nov 2025
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Which animal is commonly used as a model organism in genetic studies?
The mouse is commonly used as a model organism in genetic studies. Its short generation time, high reproductive rate, and...
Added: 25 Jan 2000
Updated: 03 Nov 2025
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What is the primary structure of DNA called?
The primary structure of DNA is called the double helix. This structure consists of two long strands of nucleotides twisted...
Added: 25 Jan 2000
Updated: 09 Nov 2025
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What phenomenon causes the color of the sky to appear blue?
The phenomenon that causes the color of the sky to appear blue is called Rayleigh scattering. When sunlight enters the...
Added: 25 Jan 2000
Updated: 28 Nov 2025
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How do earthquakes primarily occur?
Earthquakes primarily occur due to the movement of tectonic plates. The Earth's lithosphere is divided into several large and small...
Added: 25 Jan 2000
Updated: 25 Nov 2025
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What is Newton’s second law of motion?
Newton’s second law of motion states that the acceleration of an object is directly proportional to the net force acting...
Added: 25 Jan 2000
Updated: 14 Nov 2025
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In which part of the cell does cellular respiration occur?
Cellular respiration primarily occurs in the mitochondria of the cell. This process converts biochemical energy from nutrients into adenosine triphosphate...
Added: 25 Jan 2000
Updated: 25 Nov 2025
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What is an example of a non-renewable resource?
An example of a non-renewable resource is coal. Coal is a fossil fuel formed over millions of years from the...
Added: 25 Jan 2000
Updated: 04 Nov 2025
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What is the central dogma of molecular biology?
The central dogma of molecular biology describes the flow of genetic information within a biological system. It outlines the process...
Added: 25 Jan 2000
Updated: 19 Nov 2025
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