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 chemical used as an antiseptic to prevent bacterial and fungal growth.
(also called autotrophic organisms) organisms that produce their own organic food, mainly...
single-celled algae that have two flagella and are found mainly in seawater but are also common...
a naturally occurring sequence of organisms from the various trophic levels that feed on each...
an allergic reaction that triggers the immune system causing constriction and inflammation of...