Struggling with your prescribed literature?
Our Literature Study Guides provide insights and analysis of themes and characters and includes guidelines for writing your exam.
a tough substance made from a modified polysaccharide that contains nitrogen. It is the main component of the exoskeletons of arthropods, the cell walls of fungi, the radula's of molluscs and the beaks of cephalopods.
the area that occurs between the high water and low water marks. It is exposed to the air at low...
the internal supporting framework made of cartilage and/or bone. This type of skeleton occurs in...
strengthened, elongated xylem cells that conduct water.
(also called a glacial age) a long period of low temperature on Earth, during which large sheets...