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English, 03.02.2020 05:43 amygutierrez34

If lisa were doing a report on marine life, what definition might she include?
cia world factbook notes and definitions
cia world factbook

this entry lists the most pressing and important environmental problems. the following terms and abbreviations are used throughout the entry:

acidification - the lowering of soil and water ph due to acid precipitation and deposition usually through precipitation; this process disrupts ecosystem nutrient flows and may kill freshwater fish and plants dependent on more neutral or alkaline conditions (see acid rain).

acid rain - characterized as containing harmful levels of sulfur dioxide or nitrogen oxide; acid rain is damaging and potentially deadly to the earth's fragile ecosystems; acidity is measured using the ph scale where 7 is neutral, values greater than 7 are considered alkaline, and values below 5.6 are considered acid precipitation; note - a ph of 2.4 (the acidity of vinegar) has been measured in rainfall in new england.

aerosol - a collection of airborne particles dispersed in a gas, smoke, or fog.

afforestation - converting a bare or agricultural space by planting trees and plants; reforestation involves replanting trees on areas that have been cut or destroyed by fire.

asbestos - a naturally occurring soft fibrous mineral commonly used in fireproofing materials and considered to be highly carcinogenic in particulate form.

biodiversity - also biological diversity; the relative number of species, diverse in form and function, at the genetic, organism, community, and ecosystem level; loss of biodiversity reduces an ecosystem's ability to recover from natural or man-induced disruption.

bio-indicators - a plant or animal species whose presence, abundance, and health reveal the general condition of its habitat.

biomass - the total weight or volume of living matter in a given area or volume.

carbon cycle - the term used to describe the exchange of carbon (in various forms, e. g., as carbon dioxide) between the atmosphere, ocean, terrestrial biosphere, and geological deposits.

catchments - assemblages used to capture and retain rainwater and runoff; an important water management technique in areas with limited freshwater resources, such as gibraltar.

ddt (dichloro-diphenyl-trichloro-ethane ) - a colorless, odorless insecticide that has toxic effects on most animals; the use of ddt was banned in the us in 1972.

defoliants - chemicals which cause plants to lose their leaves artificially; often used in agricultural practices for weed control, and may have detrimental impacts on human and ecosystem health.

deforestation - the destruction of vast areas of forest (e. g., unsustainable forestry practices, agricultural and range land clearing, and the over exploitation of wood products for use as fuel) without planting new growth.

desertification - the spread of desert-like conditions in arid or semi-arid areas, due to overgrazing, loss of agriculturally productive soils, or climate change.

dredging - the practice of deepening an existing waterway; also, a technique used for collecting bottom-dwelling marine organisms (e. g., shellfish) or harvesting coral, often causing significant destruction of reef and ocean-floor ecosystems.

drift-net fishing - done with a net, miles in extent, that is generally anchored to a boat and left to float with the tide; often results in an over harvesting and waste of large populations of non-commercial marine species (by-catch) by its effect of "sweeping the ocean clean".

ecosystems - ecological units comprised of complex communities of organisms and their specific environments.

if lisa were doing a report on marine life, what definition might she include?
a) carbon-cycle
b) defoliants
c) desertification
d) dredging

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If lisa were doing a report on marine life, what definition might she include?
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