Famine is a more complex problem than a shortage of things to eat; it is a challenge of market and distribution, the result of a long, slow decline in access to food. That decline may occur for any number of reasons, including natural disasters, politics, repressive governments, and poor management of resources. The famine cycle may be triggered by a natural disaster, but is often exacerbated by man-made issues, such as reduced wages and/or rising food prices.
Temperature. Usually, an increase in temperature is accompanied by an increase in the reaction rate. Temperature is a measure of the kinetic energy of a system, so higher temperature implies higher average kinetic energy of molecules and more collisions per unit time.here are several factors that can influence chemical reaction rate. In general, a factor that increases the number of collisions between particles will increase the reaction rate and a factor that decreases the number of collisions between particles will decrease the chemical reaction rate.
Effect of temperature on enzyme activity. The temperture of a system is to some extent a measure of the kinetic energy of the molecules in the system. Thus the lower the kinetic energy, the lower the temperature of the system and , likewise, the higher the kinetic energy, the greater the temperature of the system. Increases in the temperature of a system results from increases in the kinetic energy of the system. This has several effects on the rates of reactions. When molecules collide, the kinetic energy of the molecules can be converted into chemical potential energy of the molecules.