What is meant by Malthusian theory?
The Malthusian Theory of Population is a theory of exponential population growth and arithmetic food supply growth. Malthus believed that through preventative checks and positive checks, the population would be controlled to balance the food supply with the population level.
What are the advantages of optimum population?
If the population is above the optimum size, the country will be able to make better use of its resources. ii. The size of markets will increase. This should enable firms to take greater advantage of economies of scale.
What are the cause and effect of overpopulation?
Overpopulation is caused by a number of factors. Reduced mortality rate, better medical facilities, depletion of precious resources are few of the causes which result in overpopulation. A direct result of this has been the increased lifespan and the growth of the population.
How do humans positively affect the environment?
Humans affect the environment in positive and negative ways. Protecting endangered species and cleaning lakes and seas has a positive effect on the environment. At home you can help the planet by recycling waste and growing plants or vegetables.
How do humans affect the forest ecosystem?
Humans have converted forest to agricultural and urban uses, exploited species, fragmented wildlands, changed the demographic structure of forests, altered habitat, degraded the environment with atmospheric and soil pollutants, introduced exotic pests and competitors, and domesticated favored species.
How do humans positively impact the desert?
When humans drive our vehicles over the desert soil and carve the tracks into the soil, it scars the land for many years. These tracks can kill off vegetation in the desert. Humans can also have a positive impact by preventing any further damage. One way to do this is by not riding motor vehicles in the desert.