Science — English

What primary energy source powers the water cycle?
The primary energy source that powers the water cycle is the sun. Solar energy drives the evaporation of water from...
Added: 25 Feb 2000
Updated: 25 Nov 2025
ℹ️
What is the study of chemical substances that form during biological processes?
The study of chemical substances that form during biological processes is known as biochemistry. This field investigates the chemical reactions...
Added: 25 Feb 2000
Updated: 19 Nov 2025
ℹ️
In which part of the plant does photosynthesis primarily occur?
Photosynthesis primarily occurs in the leaves of a plant, specifically within the chloroplasts found in leaf cells. Chloroplasts contain chlorophyll,...
Added: 25 Feb 2000
Updated: 17 Nov 2025
ℹ️
What molecular structure is typically used as a neurotransmitter?
The molecular structure typically used as a neurotransmitter is acetylcholine. It plays a crucial role in transmitting signals between nerve...
Added: 25 Feb 2000
Updated: 13 Nov 2025
ℹ️
Which wave phenomenon is characterized by the oscillation of particles in a medium?
The wave phenomenon characterized by the oscillation of particles in a medium is called a mechanical wave. In these types...
Added: 25 Feb 2000
Updated: 11 Nov 2025
ℹ️
What is the role of the mitochondria in a cell?
The role of the mitochondria in a cell is to produce adenosine triphosphate (ATP), the primary energy currency of the...
Added: 25 Feb 2000
Updated: 03 Nov 2025
ℹ️
What is the effect of temperature on the speed of chemical reactions generally?
The effect of temperature on the speed of chemical reactions is generally that an increase in temperature leads to an...
Added: 25 Feb 2000
Updated: 05 Nov 2025
ℹ️
What is the chief constituent of the world's oceans?
The chief constituent of the world's oceans is water, specifically in the form of saline water. Ocean water contains a...
Added: 25 Feb 2000
Updated: 10 Nov 2025
ℹ️
What is the term for the combined effects of all biotic and abiotic factors in an environment?
The term for the combined effects of all biotic and abiotic factors in an environment is called ecosystem. Ecosystems encompass...
Added: 25 Feb 2000
Updated: 11 Nov 2025
ℹ️
What is the chemical name for the process of iron rusting?
The chemical name for the process of iron rusting is oxidation. During rusting, iron reacts with oxygen and moisture in...
Added: 25 Feb 2000
Updated: 24 Nov 2025
ℹ️
What do you call the scientific study of the effects of drugs on living systems?
The scientific study of the effects of drugs on living systems is known as pharmacology. This branch of science examines...
Added: 25 Feb 2000
Updated: 04 Nov 2025
ℹ️
What type of energy is contained in stretched or compressed objects?
The type of energy contained in stretched or compressed objects is called potential energy. Specifically, it can be categorized as...
Added: 25 Feb 2000
Updated: 06 Nov 2025
ℹ️
What is the approximate percentage of oxygen in the Earth's atmosphere?
The approximate percentage of oxygen in the Earth's atmosphere is 21%. This essential component is critical for the survival of...
Added: 25 Feb 2000
Updated: 17 Nov 2025
ℹ️
What structure in plants transports water from the roots to the leaves?
The structure in plants that transports water from the roots to the leaves is called xylem. Xylem vessels facilitate the...
Added: 25 Feb 2000
Updated: 25 Nov 2025
ℹ️
What is the term for the ability of an organism to survive in its environment?
The term for the ability of an organism to survive in its environment is known as adaptation. Adaptations can be...
Added: 25 Feb 2000
Updated: 16 Nov 2025
ℹ️
Which organ is primarily involved in filtering blood?
The organ primarily involved in filtering blood is the kidney. Kidneys remove waste products, excess substances, and toxins from the...
Added: 25 Feb 2000
Updated: 03 Nov 2025
ℹ️
What is the most common type of electromagnetic radiation?
The most common type of electromagnetic radiation is radio waves. They have the longest wavelengths and lowest frequencies in the...
Added: 25 Feb 2000
Updated: 05 Nov 2025
ℹ️
What formation process creates igneous rocks?
The formation process that creates igneous rocks is called magma crystallization or solidification. When magma cools and solidifies, either below...
Added: 25 Feb 2000
Updated: 07 Nov 2025
ℹ️
What is the process whereby organisms conserve within limits?
The process whereby organisms conserve within limits is referred to as homeostasis. This involves maintaining stable internal conditions, such as...
Added: 25 Feb 2000
Updated: 28 Nov 2025
ℹ️
What is the term for an animal that gives birth to live young?
An animal that gives birth to live young is called a viviparous animal. Unlike oviparous animals, which lay eggs, viviparous...
Added: 25 Feb 2000
Updated: 23 Nov 2025
ℹ️