Science — English

What is the primary agent of erosion in the natural world?
Water is the primary agent of erosion in the natural world. Through processes such as rainfall, rivers, and ocean waves,...
Added: 21 Mar 2000
Updated: 18 Nov 2025
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What is the main component of the Earth’s atmosphere?
The main component of the Earth’s atmosphere is nitrogen, which constitutes about 78% of the atmosphere by volume. Nitrogen is...
Added: 21 Mar 2000
Updated: 27 Nov 2025
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Which organ system is primarily responsible for hormone production?
The organ system primarily responsible for hormone production is the endocrine system. This system consists of various glands, such as...
Added: 21 Mar 2000
Updated: 17 Nov 2025
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What is the scientific term for the study of the molecular basis of heredity?
The scientific term for the study of the molecular basis of heredity is genetics. This field explores the mechanisms of...
Added: 21 Mar 2000
Updated: 19 Nov 2025
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In what part of the cell does the Krebs cycle take place?
The Krebs cycle takes place in the mitochondria of the cell. This series of chemical reactions is a critical component...
Added: 21 Mar 2000
Updated: 30 Nov 2025
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What is the process by which bacteria convert nitrogen from the atmosphere into a usable form for plants?
The process by which bacteria convert nitrogen from the atmosphere into a usable form for plants is called nitrogen fixation....
Added: 21 Mar 2000
Updated: 17 Nov 2025
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What cellular component is responsible for producing energy in the form of ATP?
The cellular component responsible for producing energy in the form of ATP is the mitochondrion. Often referred to as the...
Added: 21 Mar 2000
Updated: 13 Nov 2025
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What type of wave is produced by vibrating objects, such as a string or air column?
The type of wave produced by vibrating objects, such as a string or air column, is known as a sound...
Added: 21 Mar 2000
Updated: 13 Nov 2025
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What structure in the human eye is responsible for detecting light?
The structure in the human eye responsible for detecting light is called the retina. The retina contains photoreceptor cells, specifically...
Added: 21 Mar 2000
Updated: 03 Nov 2025
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What is the term for a solution that has a pH level below 7?
A solution that has a pH level below 7 is referred to as an acidic solution. The pH scale ranges...
Added: 21 Mar 2000
Updated: 23 Nov 2025
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What is the primary unit of measurement for electric current?
The primary unit of measurement for electric current is the ampere, often abbreviated as amp. It quantifies the flow of...
Added: 21 Mar 2000
Updated: 12 Nov 2025
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What do we call the scientific study of the interactions between organisms and their environment?
The scientific study of the interactions between organisms and their environment is known as ecology. Ecologists investigate how living organisms...
Added: 21 Mar 2000
Updated: 22 Nov 2025
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In chemistry, what is a substance that cannot be broken down into simpler substances?
In chemistry, a substance that cannot be broken down into simpler substances is referred to as an element. Elements are...
Added: 21 Mar 2000
Updated: 02 Nov 2025
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What is the scientific name for the process of water changing into vapor?
The scientific name for the process of water changing into vapor is evaporation. This transition occurs when water molecules gain...
Added: 21 Mar 2000
Updated: 14 Nov 2025
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What structure within the atom contains protons and neutrons?
The structure within the atom that contains protons and neutrons is called the nucleus. This central portion of the atom...
Added: 21 Mar 2000
Updated: 14 Nov 2025
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What term describes the temperature at which a substance changes from a liquid to a gas?
The term that describes the temperature at which a substance changes from a liquid to a gas is known as...
Added: 21 Mar 2000
Updated: 02 Nov 2025
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What is the study of earthquakes known as?
The study of earthquakes is known as seismology. This scientific field focuses on the analysis of seismic waves generated by...
Added: 21 Mar 2000
Updated: 15 Nov 2025
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In which part of the brain is the control center for breathing located?
The control center for breathing is located in the brainstem, specifically within the medulla oblongata and the pons. These regions...
Added: 21 Mar 2000
Updated: 13 Nov 2025
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What term describes the variation of traits within a population?
The variation of traits within a population is referred to as genetic diversity. This diversity is crucial for the adaptation...
Added: 21 Mar 2000
Updated: 01 Dec 2025
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What form of energy is stored in the bonds of chemical compounds?
The form of energy stored in the bonds of chemical compounds is known as chemical energy. This type of energy...
Added: 21 Mar 2000
Updated: 15 Nov 2025
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