acquired trait: A phenotypic characteristic, acquired during growth and development, that is not genetically based and therefore cannot be passed on to the next generation (for example, the large muscles of a weightlifter).
adaptation: Any heritable characteristic of an organism that improves its ability to survive and reproduce in its environment.
[For a refutation of the false ideas advocated by Dr.
Ross, see Van Bebber and Taylor 1994.] One writer states: “Any attempt to ascribe a specific or even a general age to either man or the Earth from a Biblical standpoint is a grievous error” (Clayton 1968, Lesson 4, 3).
Hugh Ross, a theologian/scientist, who contends that the earth is billions of years old, has characterized the issue of the age of the earth as “a trivial doctrinal point” (1994, 11).
Boron isotopes provide insight on the processes responsible for the creation of continental crust, and act as a proxy for paleoclimate.
Also used to describe the process of genetic change within a population, as influenced by natural selection.
adaptive landscape: A graph of the average fitness of a population in relation to the frequencies of genotypes in it.
An orogen or orogenic belt develops when a continental plate crumples and is pushed upwards to form one or more mountain ranges; this involves many geological processes collectively called orogenesis. Top: delamination by intrusion of hot asthenosphere; Bottom: Subduction of ocean crust.
The two processes lead to differently located granites (bubbles in diagram), providing evidence as to which process actually occurred.