When your body does not get enough nutrients.
What does UNICEF do?
provide education, nutrients, and medical aid to developing countries, help protect children
4 crops that provide half the calories humans consume
potato's, corn, wheat, and rice
Slash and Burn
type of agriculture that is most common in developing countries
Crops grown in plantations
cocoa, coffee, and peanuts
requires large inputs of pesticides, inorganic fertilizers, water, and fossil fuels.
Growing two or more different crops at the same time on a plot.
Simultaneously growing a variety of crops on the same plot.
Range Management Goals
maximizing livestock productivity without overgrazing.
Livestock Production impacts
Types of soil Erosion
Rip, Gully, Sheet
Main cause of Soil Erosion
Crops that live for more than 2 years.
term used to describe the transformation of agriculture in many developing nations that led to significant increases in food production since the 1950's
tuna, clams, tilapia, and carp
a chemical used to kill insects
A chemical intended to kill insects and other organisms that damage crops.
a chemical agent that destroys plants or inhibits their growth
any agent that destroys or prevents the growth of fungi
a substance used to kill nematodes (small worms)
Pesticides that kill rodents.
integrated pest management. the use of several different methods of control to reduce the population of a particular pest, minimizing the use of pesticides
percentage of Earth's Water that is available as fresh liquid water.
a body of rock or sediment that stores groundwater and allows the flow of groundwater
the area over which groundwater will infiltrate and resupply an aquifer
An ecosystem where all water runoff drains into a single body of water
The portion of the total precipitation on an area that flows away through stream channels. Surface runoff does not enter the soil. Groundwater runoff or seepage flow from groundwater enters the soil before reaching the stream.
The aquifers below the earth's surface that supply fresh water
Most Water is used for
The least amount of water is used for
Groundwater withdrawal when the amount pumped from wells exceeds the natural rate of replenishment
Ways to prevent depletion of Groundwater
set limits on amount of groundwater pumped