Forest gardening, a fully organic food production system which dates from prehistoric times, is thought to be the world's oldest and most resilient agroecosystem.

Agroecology proposes a context-or site-specific manner of studying agroecosystems, and as such, it recognizes that there is no universal formula or recipe for the success and maximum well-being of an agroecosystem.

A cover crop is a crop planted primarily to manage soil fertility, soil quality, water, weeds, pests, diseases, biodiversity and wildlife in an agroecosystem ( Lu et al.

Soil erosion is a process that can irreparably reduce the productive capacity of an agroecosystem.

The general trend noticed by the analysis of biodiversity present in different cropping systems ( e. g., industrial agriculture and organic farming ) was that a greater the diversity of crops ( temporally and spacially ) resulted in a greater overall biodiversity of the agroecosystem, though this is not always the case.

Forest gardening, a fully organic food production system which dates from prehistoric times, is thought to be the world's oldest and most resilient agroecosystem.

While ecosystem management can be used as part of a plan for wilderness conservation, it can also be used in intensively managed ecosystems ( see, for example, agroecosystem and close to nature forestry ).

Although cover crops can perform multiple functions in an agroecosystem simultaneously, they are often grown for the sole purpose of preventing soil erosion.

However, agricultural biodiversity, sometimes called Agrobiodiversity, " encompasses the variety and variability of animals, plants and micro-organisms which are necessary to sustain key functions of the agroecosystem, its structure and processes for, and in support of, food production and food security ".

Forest gardens are probably the world's oldest form of land use and most resilient agroecosystem.

As opposed to disciplines that are concerned with only one or some of these properties, agroecologists see all four properties as interconnected and integral to the success of an agroecosystem.

Cover crops are of interest in sustainable agriculture as many of them improve the sustainability of agroecosystem attributes and may also indirectly improve qualities of neighboring natural ecosystems.

Agricultural biodiversity has spatial, temporal and scale dimensions especially at agroecosystem levels.

Forest gardens are probably the world's oldest and most resilient agroecosystem.

The content is not the same, however: rather than individual security, it is the security and continuing existence of an `` ideological group '' -- those in the `` free world '' -- that is basic.

Whitehead contends that the human way of understanding existence as a unity of interlocking and interdependent processes which constitute each other and which cause each other to be and not to be is possible only because the basic form of such an understanding, for all its vagueness and tendency to mistake the detail, is initially given in the way man feels the world.

The basic premise of all mystery stories is that the distinction between good and bad coincides with the distinction between legal and illegal.

Furthermore, the network in Figure 3 is only the basic net through which other networks pertaining to logistics and the like are interlaced.

We are reminded, however, that freedom of thought and discussion, the unfettered exchange of ideas, is basic under our form of government.

The basic truth in the reactionary response is to be found in its realistic assumption of the primacy of the real over the ideational.

When the reactionary response is thus bolstered by an intellectual defense, the characteristics of that defense are explicable only in terms of the basic attitudes of unanalyzed reaction.

The maturity in this point of view lies in its recognition that no basic problem is ever solved without being clearly understood.

The strongest appeal of the Copernican formulation consisted in just this: ideally, the justification for dealing with special problems in particular ways is completely set out in the basic ' rules ' of the theory.

This of course was not true of the educated and sophisticated people we met, who loved their pets, but kindness is not a basic human instinct.

There is a clear relationship between their educational evaluations and their basic pattern of general values.

There is impressive consistency between specific occupational preferences and the student's basic conception of what is for him a good way of life.

Now the basic question to be asked in this situation is what motivates the manipulators, that is, what are their values??

Yet this basic condition of outlawry and anarchy is not the work of Katanga.

Mr. Richard Preston, executive director of the New Hampshire State Planning and Development Commission, in his remarks to the Governors Conference on Industrial Development at Providence on October 8, 1960, warned against the fallacy of attempting to attract industry solely to reduce the tax rate or to underwrite municipal services such as schools when he said: `` If this is the fundamental reason for a community's interest or if this is the basic approach, success if any will be difficult to obtain ''.

In still others which are barely on the threshold of the transition into modernity, the decade can bring significant progress in launching the slow process of developing their human resources and their basic services to the point where an expanded range of developmental activities is possible.

The basic mapping phase of the program has been completed and the inventory phase is scheduled for completion July 1, 1961.

Since the validity of all subsequent planning depends on the accuracy of the basic inventory information, great care is being taken that the inventory is as complete as possible.

The unit of form is determined subjectively: `` the Heart, by the way of the Breath, to the Line ''.

For the family is the simplest example of just such a unit, composed of people, which gives us both some immunity from, and a way of dealing with, other people.

The connective system, or network, is tailored to meet the requirements of the objective, and it is therefore not surprising that a military body acting as a single coordinated unit has a different communication network than a factory, a college, or a rural village.

The unit consists of a small motor that goes on as soon as it is plugged in.

According to Friends, the unit was organized by John Snook, a former World War 2, commando who is vice president and general manager of the telephone company.

A BTU is a unit of heat, and the BTU rating of a conditioner refers to how much heat your machine can pump out of your house in an hour.

The safest procedure is to let your builder estimate the size of the unit you need, rather than trying to do this yourself.

Still another approach to the changeable letter type of sign is a modular unit introduced by Merritt Products, Azusa, Calif..

`` Only one lumber dealer in ten is equipped to handle unit loads ; ;

only one producer in a hundred is equipped to package and ship unit loads ; ;

only one builder in a thousand is equipped to receive unit loads.

If Af is the change per unit volume in Gibbs function caused by the shear field at constant P and T, and **yr is the density of the fluid, then the total potential energy of the system above the reference height is Af.

A randomization of `` ups '' and `` downs '' is more likely than ordered `` ups '' and `` downs '' in position ( 3 ) since the hydrogen atoms are well separated and so the position of one could hardly affect the position of another, and also since ordered `` up '' and `` down '' implies a larger unit cell, for which no evidence exists.

It is assumed that the flux values increase by a factor of 2.512 per magnitude, in accordance with the opinion that the total mass flux in each unit range in magnitude is constant.

The international unit is equipotent with the USP unit adopted in 1952, which was defined as the amount of activity present in 20 mg of the USP reference substance.

Consider a simple, closed, plane curve C which is a real-analytic image of the unit circle, and which is given by Af.

His view is that every religion pertains to a community, and, conversely, every community is in one aspect a religious unit.

Where boundary maintenance describes the boundaries or limits of the group, systemic linkage is defined `` as the process whereby one or more of the elements of at least two social systems is articulated in such a manner that the two systems in some ways and on some occasions may be viewed as a single unit.