Diachronic study
a study done over the course of time. For example, a longitudinal study of children with down syndrome (trisomy 21) might involve the study of 100 children with this condition from birth to 10 years of age. Also called a longitudinal study. The opposite of a synchronic (cross-sectional) study.
This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..
Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..
Topics Modules Quizzes/Worksheets Description Introduction to Genetics Genetics – Definition: Heredity and ..
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This tutorial elucidates body temperature regulation. Know the details here to learn how the body sets the body temperat..
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