Science — English

What is the process by which green plants make their own food?
The process by which green plants make their own food is called photosynthesis. This process primarily occurs in the chloroplasts...
Added: 24 Feb 2000
Updated: 24 Nov 2025
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What is the significance of keystone species?
The significance of keystone species lies in their critical role in maintaining the structure of ecological communities. These species have...
Added: 24 Feb 2000
Updated: 11 Nov 2025
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What defines an ecosystem?
An ecosystem is defined as a complex network of living organisms (biotic factors) interacting with their physical environment (abiotic factors)...
Added: 24 Feb 2000
Updated: 01 Dec 2025
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What is the effect of pollution on aquatic ecosystems?
Pollution profoundly affects aquatic ecosystems, leading to detrimental consequences for water quality, biodiversity, and overall ecosystem health. Contaminants such as...
Added: 24 Feb 2000
Updated: 29 Nov 2025
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What is the main energy source for cellular activities?
The main energy source for cellular activities is adenosine triphosphate (ATP). ATP serves as the primary energy currency within cells,...
Added: 24 Feb 2000
Updated: 25 Nov 2025
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What are the components of an atom?
The components of an atom include protons, neutrons, and electrons. Protons carry a positive charge and are located in the...
Added: 24 Feb 2000
Updated: 10 Nov 2025
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What is the role of feedback mechanisms in biology?
Feedback mechanisms in biology play a critical role in maintaining homeostasis and regulating physiological processes. These mechanisms can be classified...
Added: 24 Feb 2000
Updated: 09 Nov 2025
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What is the ecological significance of wetlands?
Wetlands hold significant ecological value as they act as natural filters, improving water quality by trapping pollutants and sediments. They...
Added: 24 Feb 2000
Updated: 07 Nov 2025
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What is the difference between the tree of life and a food web?
The tree of life is a model representing the evolutionary relationships between all living organisms, showing how species have diverged...
Added: 24 Feb 2000
Updated: 16 Nov 2025
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What is the primary role of hemoglobin in red blood cells?
The primary role of hemoglobin in red blood cells is to transport oxygen from the lungs to tissues and facilitate...
Added: 24 Feb 2000
Updated: 05 Nov 2025
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What is the significance of the endoplasmic reticulum?
The endoplasmic reticulum (ER) is a vital organelle in eukaryotic cells, playing a significant role in protein synthesis and lipid...
Added: 23 Feb 2000
Updated: 13 Nov 2025
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What are the types of symbiotic relationships?
The types of symbiotic relationships include mutualism, commensalism, and parasitism. In mutualism, both species benefit, such as bees pollinating flowers...
Added: 23 Feb 2000
Updated: 23 Nov 2025
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What is the primary mechanism of evolutionary change?
The primary mechanism of evolutionary change is natural selection. This process occurs when individuals with advantageous traits are more likely...
Added: 23 Feb 2000
Updated: 01 Dec 2025
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What is genetic information stored in?
Genetic information is stored in the sequences of nucleotides within DNA (deoxyribonucleic acid). Each nucleotide consists of a sugar, a...
Added: 23 Feb 2000
Updated: 21 Nov 2025
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What is the difference between population ecology and community ecology?
The primary distinction between population ecology and community ecology is their focus. Population ecology studies the dynamics of a single...
Added: 23 Feb 2000
Updated: 08 Nov 2025
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What is microbial ecology?
Microbial ecology is the study of the interactions between microorganisms and their environment, including relationships with other organisms and the...
Added: 23 Feb 2000
Updated: 10 Nov 2025
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What is morphological adaptation?
Morphological adaptation refers to the evolutionary changes in the structure and form of organisms that enhance their ability to survive...
Added: 23 Feb 2000
Updated: 14 Nov 2025
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What is the role of chloroplasts in a plant cell?
Chloroplasts are specialized organelles found in plant cells and some protists, responsible for the process of photosynthesis. They contain the...
Added: 23 Feb 2000
Updated: 14 Nov 2025
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What is a tissue in biological systems?
A tissue in biological systems is a group of interconnected cells that perform a specific function. Tissues are classified into...
Added: 23 Feb 2000
Updated: 23 Nov 2025
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What does the term "salinity" refer to in ecosystems?
The term salinity refers to the concentration of dissolved salts in water, particularly in ecosystems like oceans, lakes, and estuaries....
Added: 23 Feb 2000
Updated: 17 Nov 2025
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