Struggling with your prescribed literature?
Our Literature Study Guides provide insights and analysis of themes and characters and includes guidelines for writing your exam.
organisms that are unable to produce their own organic food and must therefore obtain nutrients by eating other organisms.
the process whereby a particular change causes a response which reverses that change.
animals that have a true coelom, which is a fluid-filled body cavity completely lined with...
the ability of a liquid to spontaneously rise up a narrow space, such as that found in xylem...
processes used to create copies of DNA fragments (usually genes), cells or organisms to create...