Environmental science
Definition of natural resources
Any substance or organism found in nature that is useful to humans.
Definition of troposphere
The lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7–6.2 miles.
Definition of Asexual reproduction
A mode of reproduction that involves a single parent and produces offspring that are genetically identical to each other and the parent.
Definition of Axial Tilt
The angle between a planet's rotational axis and its orbital axis.
Definition of Abiotic Biotic
A gravitationally bound collection of non-stellar bodies orbiting a star or star system.
Definition of fossil fuels
Fuels formed from the remains of ancient plants and animals over millions of years (coal, oil, and natural gas.)
Definition of mesosphere
The middle layer of Earth's atmosphere, located between the stratosphere and the thermosphere.
Definition of Mitosis
A mode of reproduction that involves a single parent and produces offspring that are genetically identical to each other and the parent.
Definition of Eclipse
An obscuring of the light from one celestial body by the passage of another between it and the observer or between it and its source of illumination.
Definition of primary consumers
Organisms that directly consume producers (plants or algae) in a food chain or food web.
Definition of natural resources
A substance or organism found in nature that is useful to humans, providing essential needs or contributing to economic value.
Definition of pressure system
A localized area in the atmosphere where the atmospheric pressure is either higher or lower than the surrounding air.
Definition of Pedigrees
A diagram that visually represents a family's genetic history, showing relationships and inheritance patterns of specific traits or diseases.
Definition of Galaxy
A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
Definition of tertiary consumers
Animal that occupies the third or fourth trophic level in a food chain or food web.
Definition of hydroelectric energy
A renewable energy source that harnesses the power of moving water to generate electricity.
Definition of climate
Refers to the long-term patterns of weather in a specific region, typically averaged over at least 30 years.
Definition of Recessive
Non dominant gene.
Definition of Inertia
A property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.
Definition of Limiting Factors
Environmental conditions or resources that restrict the growth, abundance, or distribution of a population or individual within an ecosystem.
Definition of biomass
Any living or recently living organic matter, typically used as a source of energy.
Definition of latitude
A geographic coordinate that measures distance north or south of the equator.
Definition of Homozygous
A situation where an individual possesses two identical copies (alleles) of a gene.
Definition of Planetary System
A gravitationally bound collection of non-stellar bodies orbiting a star or star system.
Definition of Carrying capacity
The maximum population that a given area can sustain.