The average condition of the weather in an area over many years.
The final community that emerges and is not replaced after ecological succession.
The scientific process by which an organism that normally reproduces sexually is reproduced asexually, resulting in a new organism that is genetically identical to the parent organism.
All the different populations of species that live within a habitat.
The interaction between organisms that require the same food and resources.
A substance that is formed when two or more different elements combine chemically.
The transfer of heat by direct molecular contact.
The materials through which electricity moves easily; e.g., most metals.
Animals, which have to eat other organisms in order to get energy.
The sample in an experiment that does not contain the variable.
The transfer of heat by the flowing action within a liquid or gas.
Earth's center, which is made up of an outer zone and an inner zone.
The chemical wearing away of a metal, which forms a new substance.
The chemical bond formed when electrons are shared between two or more atoms.
Occurs during gamete formation, when a section of genes on one chromosome breaks off and changes places with the same section on its homologous chromosome; produces greater variation in the offspring because the chromosomes are different from-those of the parents.
The outermost solid rock layer that covers the surface of Earth.
The fluid that fills a cell, in which most life processes occur.