For example, some inexpensive mowers are designed to have a service life of 200 or fewer hours while pricier mowers typically are designed to last 500 or more hours. Therefore, a lawnmowerâs life expectancy can be based on how often and how long it is used.
exponential growth. Increase in number or size, at a constantly growing rate. It is one possible result of a reinforcing feedback loop that makes a population or system grow (escalate) by increasingly higher amounts. Compound interest is an example of exponential growth. Use 'exponential growth' in a Sentence.
(Redirected from Population growth rate) In biology, population growth is the increase in the number of individuals in a population. Global human population growth amounts to around 75 million annually, or 1.1% per year. The global population has grown from 1 billion in 1800 to 7 billion in 2012.