QUESTION 3 3.1 Following the recent cholera outbreak in Hammanskraal, a town in the Northern Gauteng province in South Africa, the importance of water quality and sanitation has drawn a national attention. Write short explanatory notes on the possible sources that could lead to contamination prior, during and after purification of drinking water. 3.2 Explain important steps that would see the removal of pathogenic microorganisms during a wastewater treatment process prior to water discharge into a river.

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Sexual Motivation

Sexual motivation refers to a person's overall desire for sexual activity. It is an unusual motivation. Generally, among lower animals, the term 'drive' is commonly referred to as sexual motivation. It means a certain internal force drags the animal to be involved in reproductive behavior. On the contrary, humans are not simply driven by any internal force; rather, the sexual motivation in humans is due to several factors such as biological (hormones, genes), environmental (familial upbringing, chemical exposure) and physiological factors (culture, desire) which further determine engagement in sexual activities.