sodium amytal test: anesthetize one hemisphere and check for language function dichotic listening test: report more digits heard by dominant half functional brain imaging: fMRI or PET used to see which half is active when performing a language test
The process of change by which new species develop from preexisting species over time? The process by which species change over time is evolution. The process by which new species develop from preexisting species over time is evolution.
Lesson Summary. Introduced species are those that have been moved by humans to an environment where they didn't occur naturally. Species have been introduced accidentally through travel or by humans for conservation efforts, population control, or boosting of agriculture.