1.a. Diseases can be classified and their patterns mapped. The spread of diseases is complex and influenced by a number of factors, 1.b. There is a relationship between physical factors and the prevalence of disease which can change over time, 1.c. Natural hazards can influence the outbreak and spread of disease...
Henry VII Part 1: Immediate problems on becoming king., Henry VII Part 2: Dealing with Rivals to the Throne (by Lixy), Henry VII Part 3: His Financial Problems...
Unit 1, Topic 1 Cells as the basis of life, Unit 1, Topic 2 Exchange of nutrients and wastes, Unit 1, Topic 3 Cellular energy, gas exchange and plant physiology...