Essays Tagged: "Organic matter"

Why do humans err?

kes us commit errors. Unlike computers, built of mechanical or electronic parts, humans are made of organic matter and nerve pathways. These same pathways, with the help of the brain are responsible f ...

(5 pages) 63 1 4.3 Mar/1997

Subjects: Humanities Essays > Philosophy

Fungus

ellular organisms that absorb nutrients for food. Fungi, together with bacteria decay and decompose organic matter. Some fungi can be parasitic and cause serious diseases in plants and animals. Though ... he natural decay of sewage. Soil is a natural habitat for many types of fungus, which live on dead, organic remains. Some fungi will infect living plants and animals if given the chance, while others ...

(2 pages) 47 1 4.7 Jan/1996

Subjects: Science Essays > Biology

Fungi

ellular organisms that absorb nutrients for food. Fungi, together with bacteria decay and decompose organic matter. Some fungi can be parasitic and cause serious diseases in plants and animals. Though ... he natural decay of sewage. Soil is a natural habitat for many types of fungus, which live on dead, organic remains. Some fungi will infect living plants and animals if given the chance, while others ...

(2 pages) 76 1 5.0 Jan/1995

Subjects: Science Essays > Biology

Petroleum

and sulfurouscompounds.50-90% of petroleum is hydrocarbons and the remaining is composed chiefly oforganic compounds containing oxygen, nitrogen, or sulfur. Pennsylvania crudeoils contain 97-98% hydr ... lls andmountains, 2) biochemical and chemical precipitates such as limestone, gypsum,anhydrite, 3 ) organic matter from plants and animals which lived in the sea orcarried by rivers.The modern petrole ...

(2 pages) 58 0 3.0 Nov/2002

Subjects: Science Essays > Environmental Science

The nitrogen.

nitrogen is an important element found when organic matter is analized. living things cannot utilize nitrogen unless it is in a complex form. An ... of their tissue proteins partially from other animals protein. plants build up their protein from inorganic nitrogen compounds in the soil and from some extent from free nitrogen in the atmosphere. be ... es and ammonium soils.Some facts:nitrogen is four- fifths of the air.bacteria release nitrogen from organic compounds.aeseptic- free from harmful bacteria, especially those that are the cause of some ...

(2 pages) 52 0 1.3 Apr/2003

Subjects: Science Essays > Chemistry

Nitrogen cycle.

nitrogen is an important element found when organic matter is analyze. living things cannot utilize nitrogen unless it is in a complex form. Ani ... of their tissue proteins partially from other animals protein. plants build up their protein from inorganic nitrogen compounds in the soil and from some extent from free nitrogen in the atmosphere. be ... es and ammonium soils.Some facts:nitrogen is four- fifths of the air.bacteria release nitrogen from organic compounds.aseptic- free from harmful bacteria, especially those that are the cause of some p ...

(2 pages) 76 2 1.3 Apr/2003

Subjects: Science Essays > Chemistry

This is a research seminar summary about Fungal Pathogenesis and explains some physiological pathogenic characteristics in fungi.

logical barriers that grow in humans, their ability to derive its nourishment from dead or decaying organic matter (saprophytes), they have host defense mechanisms, and dimorphism, a unique ability in ...

(2 pages) 28 0 5.0 Sep/2003

Subjects: Science Essays > Biology

Modern agriculture and society

ut four decades ago, crop yields in agriculture depended mainly on internal resources, recycling of organic matter, built-in biological control mechanisms and rainfall intensity and frequency. At that ...

(2 pages) 42 0 0.0 Mar/2004

Subjects: Science Essays

This describes the Nitrogen Cycle.

restrial ecosystems (Figure 1). Nitrogen is used by living organisms to produce a number of complex organic molecules like amino acids, proteins, and nucleic acids. The largest store of nitrogen is fo ... arger than the total nitrogen contained in living organisms. Other major stores of nitrogen include organic matter in soil and the oceans. Despite its abundance in the atmosphere, nitrogen is often th ...

(3 pages) 52 0 3.7 Apr/2004

Subjects: Science Essays > Biology

Litterature review: Biotic and abiotic factors affecting the distribution of freshwater macroinvertebrates

gae and bacteria, which are on the lower end of the food chain. Some shred and eat leaves and other organic matter that enters the water. Because of their abundance and position in the aquatic food ch ... the impact of different parameters such as substrate type, particle size, current velocity, depth, organic content and habitat heterogeneity on spatial richness. They concluded that at a small scale ...

(7 pages) 78 0 4.8 May/2004

Subjects: Science Essays > Biology

Fresh water Ecology Josh de Salles

problems to the attachment or respiration of animals, and can lead to a build up of semi decomposed organic matter. This can lead to a high biological oxygen demand (BOD) and the water becoming anoxic ... bodies (e.g. water boat men).viii) The chemical compositionChanges in nitrate levels resulting from organic pollution may affect the ecology of a river or stream directly. The use of nitrate fertilise ...

(5 pages) 27 0 3.0 Jul/2004

Subjects: Science Essays > Biology

Acid Rain - Impact and Cause

5.6. The acid consists of sulfur and nitrogen compounds that are produced naturally by the decay of organic matter in swamps, wetlands, intertidal areas, and shallow waters of the oceans. The amount t ... il used in transportation.Industrial society also produces other air pollutants, including volatile organic compounds, ammonia, and hydrocarbons. Any of these may contribute to the formation of acid r ...

(3 pages) 39 0 4.0 Sep/2004

Subjects: Science Essays > Chemistry

Copper: Environmental Effects of Copper and How Copper is Processed

ustrial settings, landfills and waste disposals.When copper ends up in soil it strongly attaches to organic matter and minerals. As a result it does not travel very far after release and it hardly eve ... ce the proceedings of certain farmlands, depending upon the acidity of the soil and the presence of organic matter. Despite of this, copper-containing manures are still applied.Copper can interrupt th ...

(3 pages) 20 0 0.0 Jun/2005

Subjects: Science Essays > Chemistry

Biomass: Which energy resource(s) should be developed for the future? To support your choice(s), discuss use, cost, supply, net useful energy yield, and environmental impact.

sed wood from the forest to build their homes and even to cook.We define biomass as the energy from organic matter. The Earth is full of this natural and renewable resource of energy. If we learn how ... of any biomass such as wood from the trees, plants, residues from agriculture or forestry, and the organic component municipal and industrial waste.Using biomass as a source of energy we can reduce d ...

(4 pages) 72 0 4.0 Oct/2005

Subjects: Science Essays > Environmental Science

Which energy resource(s) should be developed for the future? Biomass.

sed wood from the forest to build their homes and even to cook.We define biomass as the energy from organic matter. The Earth is full of this natural and renewable resource of energy. If we learn how ... of any biomass such as wood from the trees, plants, residues from agriculture or forestry, and the organic component municipal and industrial waste.Using biomass as a source of energy we can reduce d ...

(4 pages) 62 0 5.0 Dec/2005

Subjects: Science Essays > Biology

The Earthworm

a leaf whole. The worm does not contain any teeth. The earthworm swallows soil and digests out the organic matter before discharging the inert particles as castings.How the Invertebrate reacts to the ...

(1 pages) 462 0 0.0 Oct/2001

Subjects: Humanities Essays

Hydrogen

e. On earth, hydrogen occurs chiefly in combination with oxygen in water, but it is also present in organic matter such as living plants, petroleum, coal, etc. It is present as the free element in the ...

(1 pages) 457 0 3.0 Feb/2008

Subjects: Science Essays > Chemistry

The Carbon Cycle

carbon balance. Plankton in the world oceans use carbon dioxide for growth (photosynthesis). Waste organic matter sinks down from these ecosystems, carrying carbon and nutrients away from the surface ...

(2 pages) 19 0 3.0 Mar/2008

Subjects: Science Essays > Environmental Science

Ecojar Lab By Bob Hendrick (Lab Report)

sed because all the nutrients go straight to the roots of the plant. Fertilizers can be composed of organic matter or be made of inorganic chemicals or minerals. The reason why fertilizers are used is ... effect of “hardness” ions on other ingredientsSubstances to modify pHAcids to break down organic compoundsOxidants for bleaching and breaking down organic compoundsNon-surfactant materials ...

(9 pages) 8 0 3.0 Nov/2008

Subjects: Science Essays > Chemistry

Slater Investigation on Responce to Light Stimuli

s such as blowflies and centipedes, sufficient food and damp. The ground was mostly made up of damp organic matter, damp soil, moist leaves, some were found on stony ground.The light intensity is sign ...

(10 pages) 52 0 0.0 Apr/2010

Subjects: Science Essays > Biology