61 results found

Search Results for: rock

Permeability

Permeability Definition What is permeability? In earth science, its definition is this: "the ability of any material such... Read More

Differentiation

Differentiation in biology is the process where less specialized cells undergo changes to develop specialized structures and... Read More

Kelp

The swaying and winding of kelp in the ocean currents has an entrancing, hypnotic quality that would be the envy of the... Read More

Substrate

Substrate Definition What is a "substrate"? The underlying substances or layers are termed as substrate. The definitions of... Read More

Specimen

A specimen is a meticulously selected representative of a group that undergoes rigorous research studies to derive some... Read More

Oxidation

Oxidation Definition How do we define oxidation? There are several definitions of the oxidation process. Oxidation can be... Read More

Parthenogenesis

To reproduce, by definition, means to produce new offspring. The process is referred to as reproduction, which is one of the... Read More

Trap

trap (Science: geology) An old term rather loosely used to designate various dark-coloured, heavy igneous rocks, including... Read More

Dove

Dove 1. (Science: zoology) a pigeon of the genus Columba and various related genera. The species are numerous. The domestic... Read More

Gum

Gum The dense tissues which invest the teeth, and cover the adjacent parts of the jaws. (Science: medicine) gum rash,... Read More

Seaweed

A seaweed refers to any of the macroscopic marine algae. They include the conspicuous, multicellular algal species of... Read More

Primary succession

Primary Succession Definition Primary succession is an ecological succession where a newly formed area is inhabited for the... Read More

Disruptive Selection

An evolutionary process known as disruptive selection (or disruptive natural selection) causes a population to become... Read More

Natural selection

Natural Selection Definition What is natural selection in biology? Natural selection is defined as a process in nature... Read More

Redox reaction

Redox Reaction Definition What are redox reactions? This is a common term in chemistry and biology. In chemistry, a redox... Read More

Organization

Organization Definition The meaning of the term "organization" is very simple. It means the state wherein things are... Read More

Horse

Horse 1. To provide with a horse, or with horses; to mount on, or as on, a horse. Being better horsed, outrode me. 2. To sit... Read More

Soils

Where a plant grows and what resources are available to it is of vital importance to the life of a plant. The soil type and... Read More

Unusual Plants

By Regina Bailey Plants are amazing organisms. They are able to create their own food through photosynthesis, and provide... Read More

Succession

Definition noun, plural: successions, word origin: Latin "successio" 1. (general) (a) The act of following in order or... Read More

Metamorphism

metamorphism (Science: geology) The state or quality of being metamorphic; the process by which the material of rock masses... Read More

Crevice

Definition noun, plural: crevices (1) A narrow crack or opening, especially in a solid substance like rock or ice. (2)... Read More

Cytokinesis

The cell cycle of eukaryotes is a cyclical series of biological events that certain asexual cells go through. The cell cycle... Read More

Epiphyte

Epiphyte a plant growing on, but not parasitic on, another plant (often loosely applied to plants, such as orchids, that... Read More

Petrified Wood : The World of Fossilized Wood, Cones, Ferns, and Cycads

Petrified Wood : The World of Fossilized Wood, Cones, Ferns, and Cycads ... Read More

Thigmotropism

Definition noun Growth or movement of a cell or an organism in response to touch Supplement In general, tropism is an... Read More

Plankton

Plankton is a diverse group of typically microscopic, aquatic organisms suspended in the water column and rely on water... Read More

Biosphere

What is biosphere? The biosphere is that part of the Earth where living things thrive and live. It is the portion of the... Read More

Decomposer

Decomposer Definition The organisms that carry out the process of decay or breakdown of the dead organism are known as... Read More

Diatomaceous earth

Definition noun A type of silica-rich dirt which is soft, fine-grained, porous, light-coloured, and composed of the... Read More

Hydroxide ions

Hydroxide is a polyatomic ion consisting of oxygen and hydrogen: OH− It has a charge of −1. Hydroxide is one of the... Read More

Fossil record

Definition noun The totality of fossilized artifacts and their placement within the earth's rock strata. It provides... Read More

Non-living thing

Non-living Thing Definition A non-living thing in biology means any form without a life, such as an inanimate body or... Read More

Living things

Living Things Definition A living thing pertains to any organism or a life form that possesses or shows the characteristics... Read More

Terrestrial animal

Definition noun, plural: terrestrial animals Any animal that lives, grows and reproduce on terrestrial (or... Read More

Bryophytes

Bryophytes (nonvascular plants) do not have xylem or phloem. The habitations of this plant group are widely varied and... Read More

Sexual selection

What is Sexual Selection? The definition of sexual selection is very interesting in biological terms. The sexual selection... Read More

Nest

nest Origin: AS. Nest; akin to D. & G. Nest, Sw. Naste, L. Nidus, for nisdus, Skr. Nia resting place, nest; cf. Lith.... Read More

Lamprey

Lamprey (Science: zoology) An eel-like marsipobranch of the genus petromyzon, and allied genera. The lampreys have a round,... Read More

Sand

sand particles in siliciclastic sediment that range in size from 0.0625 millimetres (very fine-grained sand) to 2.0... Read More