Glossary

a very large organic molecule composed of many smaller molecules

in Paramecia, the larger of the two types of nuclei

an element used by plant cells in relatively large amounts

Nutrients that plants require in substantial doses. They include nitrogen, phosphorus, potassium, calcium, sulfur and magnesium.

Living organisms in the soil which are large enough to be seen with the naked eye. Includes mite, millipede centipede, snail, slug, spider, ant, beetle, cut worm, earthworm, rodent. (see herbivores, detritivores, and carnivores)

 Living organisms in the soil which are large enough to be seen with the naked eye. Includes mite, millipede centipede, snail, slug, spider, ant, beetle, cut worm, earthworm, rodent. (see herbivores, detritivores, and carnivores)

a large white blood cell that engulfs pathogens and cellular debris

a sievelike plate on the aboral surface of an echinoderm through which water enters the water-vascular system

one of the milk-secreting glands of mammals

a movable mouthpart that usually functions in chewing

Mangroves are woody trees or shrubs that grow in coastal habitats in Water logged saline soils. Mangrove plants occupy shallow water and inter tidal zones in tropical and subtropical coastal regions.

the epidermal layer of mollusks

a space between the mantle and the visceral mass in mollusks

Wetland without trees; in North America, this type of land is characterized by cattails

 and rushes.

a mammal that carries its young in a pouch

a fundamental property of an object generally regarded as equivalent to the amount of matter in the object.

one of the brief periods of time during which large numbers of species disappeared.

The small number of countries, located largely in the tropics, which account for a high percentage of the world's biodiversity by virtue of containing very large numbers of species.

This group of bacteria species work to break down organic matter under "warm" conditions of 40 degrees up to 110 degrees. The ideal temperature of their environment is 70 to 90 degrees.

 This group of bacteria species work to break down organic matter under "warm" conditions of 40 degrees up to 110 degrees. The ideal temperature of their environment is 70 to 90 degrees.

 Explosive (when highly concentrated) gas that is formed when organic materials decompose in anaerobic conditions which exist in landfills. Landfill operators must have a method of venting methane gas before it becomes volatile.

Micro irrigation is the frequent application of small quantities on, above or below the soil surface, by surface drip, subsurface drip, micro sprayers or micro sprinklers. Water is applied as discrete or continuous drop, tiny streams or miniature sprays through emitters or application placed along a water delivery line near the plant. Micro irrigation is characterized by low flow rate , long duration irrigation, frequent irrigation, water applied near or into the root zone of plants and low pressure delivery systems.

Used interchangeably with "microorganism". (see microorganism)

In practice, a diverse classification of all those organisms not classed as plants or animals, usually minute microscopic or submicroscopic and found in nearly all environments. Examples are bacteria, cyanobacteria (blue-green algae), mycoplasma, protozoa, fungi (including yeasts), and viruses.

The smallest isolated population having a good chance of surviving for a given number of years despite the foreseeable effects of demographic, environmental, and genetic events and natural catastrophes.

Growing two or more crops on the same piece of land simultaneously without maintaining row specification

System of simultaneously pursuing agriculture, animal husbandry, poultry, apiculture, sericulture integrating term in such a manner that their natural interdependence is beneficially used

An agriculture practice in which a single species of plant is cultivated in an area. It requires large amounts of fertilizers and pesticides

Leaves, straw or compost used to cover growing plants to protect them from the wind or cold.

Growing two or more crops consecutively on the same field in the same year.

Waste produced in urban areas, mainly made up of household waste but also some small commercial waste that is similar to household waste

One category of symbiosis in which both participating species generally benefit.