Struggling with your prescribed literature?
Our Literature Study Guides provide insights and analysis of themes and characters and includes guidelines for writing your exam.
an informal term for any living species which appears to be the same as a species otherwise only known from fossils and which has no close living relatives. These species have all survived major extinction events. The coelacanth is an example of a living fossil.
single-celled brown algae found in fresh water and seawater. They have hard, shell-like cell...
the blood circuit from the heart to the lungs and back to the heart.
an endocrine gland attached to the base of the hypothalamus, which secretes hormones that play a...