gross nutrients-

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• Primary production — For other uses, see Primary production (economics). Global oceanic and terrestrial photoautotroph abundance, from September 1997 to August 2000. As an estimate of autotroph biomass, it is only a rough indicator of primary production potential,… …   Wikipedia

• Carnivorous plant — Insectivorous Plants redirects here. For the book by Charles Darwin, see Insectivorous Plants (book). Nepenthes mirabilis in flower, growing on a road cut in Palau Carnivorous plants are plants that derive some or most of their nutrients (but not …   Wikipedia

• tropical rainforest — Introduction also spelled  tropical rain forest        luxuriant forest, generally composed of broad leaved trees and found in wet tropical uplands and lowlands around the Equator.  Rainforests are vegetation types dominated by broad leaved trees …   Universalium

• brazil — /breuh zil /, n. brazilwood. [1350 1400; ME brasile < ML < It < Sp brasil, deriv. of brasa live coal (the wood being red in color) < Gmc; see BRAISE] * * * Brazil Introduction Brazil Background: Following three centuries under the rule of… …   Universalium

• Brazil — Brazilian /breuh zil yeuhn/, adj., n. /breuh zil /, n. a republic in South America. 164,511,366; 3,286,170 sq. mi. (8,511,180 sq. km). Cap.: Brasília. Portuguese and Spanish, Brasil. Official name, Federative Republic of Brazil. * * * Brazil… …   Universalium

• biosphere — biospheric /buy euh sfer ik/, adj. /buy euh sfear /, n. 1. the part of the earth s crust, waters, and atmosphere that supports life. 2. the ecosystem comprising the entire earth and the living organisms that inhabit it. [1895 1900; < G Biosphäre; …   Universalium

• environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …   Universalium

• temperate forest — ▪ ecology Introduction  vegetation type with a more or less continuous canopy of broad leaved trees. Such forests occur between approximately 25° and 50° latitude in both hemispheres (seeFigure 1 >). Toward the polar regions they grade into… …   Universalium

• History of agriculture in the People's Republic of China — For over 4,000 years, China has been a nation of farmers. By the time the People s Republic of China was established in 1949, virtually all arable land was under cultivation; irrigation and drainage systems constructed centuries earlier and… …   Wikipedia

• Glossary of environmental science — This is a glossary of environmental science.Environmental science is the study of interactions among physical, chemical, and biological components of the environment. Environmental science provides an integrated, quantitative, and… …   Wikipedia

• Theoretical production ecology — tries to quantatively study the growth of crops. The plant is treated as a kind of biological factory, which processes light, carbon dioxide, water and nutrients into harvestable parts.Main parameters kept into consideration are temperature,… …   Wikipedia