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.
There 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.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.
Increasing temperature increases the rate of enzyme activity up to a point when it become too hot, when the enzyme is denatured and so activity stops.Increasing temperature i â¦ ncreases the rate because the substrate has more kinetic energy, so is more likely to collide with the enzyme for the reaction to take place.   Temperature can have other effects as well. Enzymes perform their work on what is called a substrate. The substrate may also be affected by temperature. For example, there is an enzyme commonly used in molecular biology called ligase. Ligase joins to pieces of DNA together.