Struggling with your prescribed literature?
Our Literature Study Guides provide insights and analysis of themes and characters and includes guidelines for writing your exam.
plastids responsible for pigment synthesis and storage. They mainly contain carotenoids, but can contain any pigment other than chlorophyll.
series of interlinked food chains by which energy circulates within an ecosystem.
the volume of air that is inhaled and exhaled during normal breathing.
a tough substance made from a modified polysaccharide that contains nitrogen. It is the main...
simple inorganic chemical substances (mineral salts) that are needed in relatively large amounts...
the non-living ground tissue with thick-walled cells that gives strength, support and protection...