Immigration
migration of individuals into a country (population).
Hypothesis
an educated guess about the solution of a problem.
Caprock
a hard rock layer that traps oil and gas.
Adhesion
the attraction between water molecules and molecules of other substances.
Ion
an atom that is charged.
Density-independent Factors
factors affecting a population that are not related to how close the organisms are in contact with one another.
Theory
a concept that has been tested many times and proven to be true.
Ore
rock or solid material that contains a valuable mineral.
Cohesion
water molecule's attraction to other water molecules.
Atom
Density-dependent Factors
Carbon Neutral
a source of energy that consumes the same amount of carbon dioxide during its creation that it will give off when it is burned.
Aerobic Organism
an organism that requires oxygen for cellular respiration.
Condensation
the process in which water vapor in the air is changed into liquid water.
Molecule
when two or more atoms are joined together to make a larger structure.
Biotic Factors
density-dependent factors.
Carbon Footprint
the amount of carbon dioxide produced by a person, organization, or state over a given period of time.
Autotrophs
organisms that produce their own food.
Evaporation
Cell
Abiotic Factors
density-independent factors.
Ionic Bond
chemical bond between oppositely charged atoms.
Decomposers
Hydrogen Bonds
the interaction between the positive hydrogen atom of one water molecule and the negative oxygen atom of another water molecule.
Organic