Review Guide for Food and Agriculture Issues

A comprehensive vocabulary review deck covering fundamental terms and concepts in food production, soil science, irrigation systems, and agricultural environmental impacts.

Malnutrition

A condition resulting from a diet that lacks the correct balance of proteins, carbohydrates, vitamins, and minerals.

Undernourished

The condition of not consuming sufficient daily calories to meet energy needs and maintain health.

Food Scarcity

A shortage or inadequate availability of food supplies to sustain a given population.

Food Security

The condition in which all people at all times have physical, social, and economic access to sufficient, safe, and nutritious food.

Green Revolution

A significant twentieth-century agricultural transformation characterized by the use of high-yield crop varieties, synthetic fertilizers, pesticides, and mechanized irrigation.

GMO

Genetically Modified Organism; an organism whose genetic material has been altered using genetic engineering techniques.

CAFO

Concentrated Animal Feeding Operation; an intensive animal agricultural facility where livestock are crowded and raised in confined spaces.

Pesticide Treadmill

A cycle in which pests develop resistance to pesticides, necessitating higher doses or the development of new chemical treatments.

Bioaccumulation

The buildup of a persistent chemical or toxin within the tissues of a single organism over its lifetime.

Biomagnification

The increasing concentration of toxic substances in organisms at successively higher trophic levels of a food chain.

Soil Horizons

Distinct horizontal layers of soil (typically designated O, A, B, and C) that differ in physical characteristics, chemical composition, and organic content.

O Horizon

The uppermost surface layer of soil composed primarily of organic material, leaf litter, and decomposing plant matter.

A Horizon

The topsoil layer rich in organic humus and minerals, where the majority of biological activity and plant root growth occur.

B Horizon

The subsoil layer beneath the topsoil that accumulates leached minerals, nutrients, and clay from overlying horizons.

C Horizon

The layer consisting of weathered parent material and partially broken-down rock situated directly above bedrock.

Weathering

The physical, chemical, or biological process of breaking down rock and mineral matter at or near the surface of the Earth.

Erosion

The mechanical process by which surface soil, sediment, or rock particles are detached and transported away by wind or water.

Porosity

The fraction or percentage of total volume occupied by void or pore space within soil, sediment, or rock.

Permeability

The property or capacity of soil or porous rock to allow fluids to pass through its interconnected spaces.

Monoculture

The agricultural practice of growing a single crop species exclusively over a large area of farmland.

Irrigation

The artificial application of controlled amounts of water to agricultural land to facilitate crop growth.

Drip Irrigation

A highly efficient irrigation system that releases water slowly directly to plant root zones through a network of perforated pipes or tubing.

Spray Irrigation

An irrigation method where water is pumped through pressurized nozzles and sprayed overhead across agricultural fields.

Flood Irrigation

An irrigation technique where an entire field is submerged in water, allowing it to soak evenly into the ground.

Furrow Irrigation

An irrigation method in which water is channeled through narrow, shallow trenches dug between rows of planted crops.

Salinization

The accumulation of soluble salts in the upper soil layers, typically resulting from prolonged irrigation and subsequent water evaporation.

Transpiration

The release of water vapor into the atmosphere from plant leaves through microscopic pores called stomata.

Infiltration

The process by which surface water soaks and moves downward into the soil profile.

Runoff

Water from precipitation or irrigation that does not infiltrate the ground and instead flows over the land surface into waterways.

Condensation

The physical change of state in which water vapor cools and transforms into liquid water droplets.

Precipitation

Any moisture that condenses in the atmosphere and falls to the ground, including rain, snow, sleet, or hail.

Fertilizer

A chemical or natural substance added to soil or land to supply essential plant nutrients and promote growth.

Pesticide

A chemical agent or substance manufactured to destroy, deter, or mitigate agricultural pests such as insects, weeds, and fungi.

Eutrophication

The ecological process where excessive nutrient runoff stimulates rapid algal blooms, eventually causing oxygen depletion and aquatic dead zones.