Detailed notes on exchange surfaces, including ventilation in humans, insects and fish. Notes written using OCR Biology A textbooks, past papers and more. Written by a student with all A*s at GCSE with an offer for Natural Sciences at Cambridge.

Incredibly well written a very high scoring essay on the effects of heat on performance in sport with additional evaluation of the methods that are used to combat the effects of heat. It goes into a lot of detail and can be used for either topic or both combined. Incredibly well written a very high scoring essay on the effects of heat on performance in sport with additional evaluation of the methods that are used to combat the effects of heat. It goes into a lot of detail and can be used for eit...

A* explanation of ionization enthalpy for the OCR A level course Includes detailed definitions, examples, trends of ionization enthalpies across the periodic table and exceptions to rules

Comprehensive and in-depth notes on the biological aspects of this chapter, using specification points as headings to ensure that all required material is included- and no irrelevant content (like many of the textbooks). Created and used by an A-Level Biology student for the NEW SPECIFICATION from 2016.