Struggling with your prescribed literature?
Our Literature Study Guides provide insights and analysis of themes and characters and includes guidelines for writing your exam.
the difference between the concentrations of a specific molecule in two adjacent areas.
the breakdown of food into smaller pieces by chewing and peristalsis.
(also called lithospheric plates) massive, irregularly shaped slabs of solid rock.
energy resources such as coal and oil, which are being used up much more quickly than they can...
specialised proteins which catalyse chemical reactions and thereby speed up chemical reactions...