question

why we need to be concerned with damage to raifnorests and coral reefs

answer

this graph helps to explain

question

eutrophication, followed by hypoxia, is a likely result, ultimately leading to less co2 uptake and less oxygen released

answer

recall that areas with high net primary productivity not only produce high levels of biomass rapidly, they also take up large amounts of co2 and give off large amounts of oxygen. what is the likely result of the increasing amounts of sediments and fertilizers in the major rivers emptying into oceans and affecting algal beds, reefs, swamps, and estuaries?

question

tend to have more productivity than those without much freshwater

answer

overall, it appears that biomes with more available fresh water

question

a system

answer

any network of relationships among a group of components, which interact with and influence one another through exchange of matter and/or information, is referred to as

question

dynamic equilibrium

answer

a system receving inputs and producing outputs without undergoing any changes in size or function is said to be in

question

excess nutrients from fertilizers

answer

the eutrophication that has taken place in the gulf of mexico and other locations appears to be due to

question

an open system of organic and inorganic materials and energy

answer

a natural ecosystem, undamaged by human activity is

question

an ecotone

answer

the swamplands of extreme southern louisiana, which contain elements of both the forests and costal marshes, could be called

question

net primary productivity

answer

the rate at which biomass becomes available to consumers is termed

question

sum of all the planet's living organisms and the abiotic portions of the environment

answer

the biosphere consists of the

question

are required in large amounts for organisms to survive

answer

macronutrients

question

the same few micronutrients limit growth everywhere

answer

experiments done in costal regions of oceans throughout the world have demonstrated that

question

atmospheric n2 gas

answer

the origin of all nitrogen biological tissues is

question

mutualistic and free living bacteria

answer

nitrogen fixation is a process that makes nitrogen available to plants and is carried out by

question

underground water reservoirs

answer

aquifers are

question

increasing evaporation

answer

by damming rivers and using methods such as flood irrigation, we are

question

is based on natural ecosystems and helps us design sustainable management strategies

answer

ecological modeling

question

decreases/increase

answer

in a eutrophic aquatic ecosystem, dissolved oxygen________and dissolved macronutrients_________

question

littoral or limnetic zones

answer

the pair of mallard ducks in the figure eat floating plants such as duckweed, seeds of shoreline plants, and very small organisms at or near the surface. they would be most affected by any change to the

question

the benthic zone

answer

frog eggs are usually attached to vegetation or rocks near the surface of a pond. tadpoles can use essentially all areas of a shallow pond, or the top few feet of a deeper pond or lake. adult frogs can live of land or in the water. a frog's life would be least likely to be disrupted by a change in the

question

the limnetic zone

answer

rooted freshwater plants cannot live below

question

most of this is far from where humans live

answer

only about 2.5% of all the water on our planet is freshwater. however

question

may take a variety of pathways through surface water or groundwater flow

answer

precipitation that falls on earth's surface

question

a water-bearing layer is trapped between two layers that are less permeable

answer

an artesian aquifer occurs when

question

agricultural irrigation

answer

humans use fresh water primarily for

question

generate electricity, prevent flooding and provide irrigation

answer

we build dams to

question

unsustainable

answer

data indicate that the present rate of freshwater consumption in most developed countries is

question

it drained the aral sea and increased the salt content of soils

answer

why was the irrigaiton of soviet cotton farming operations a problem

question

overconsumption of water from aquifers weakening the substrate

answer

sinkholes result from

question

usually be used from sinks for irrigation and watering lawns

answer

grey water can

question

fertilizers from agricultural fields

answer

which of the following is one of the major pollutants of groundwater

question

avoid increasing phosphorus runoff into the limnetic zone

answer

you want to maintain a healthy pond at your school site. last year another pond became eutrophic; to avoid that, you want to

question

nitrates

answer

the "blue-baby" syndrome that suffocates infants is a consequence of excess_____in the water supply

question

turbidity, hard water ions, and pH

answer

you have been sent out to a small town where residents have recently begun complaining about a funny taste to the water. which of the following items would you measure as you first begin to assess water quality in theis reservoir

question

a rural method of handling sewage

answer

a septic system is

question

letting sewage sit in large tanks so suspended solids settle out

answer

in a municipal water treatment plant, the primary treatment step consists of

question

several years of drought coupled with the rapid growth of las vegas

answer

as of 2010, the saga of the colorado river's water resource allocation is being complicated by

question

planting native or drought-resistant plants with little or no water requirements

answer

xeriscaping can save water by

question

reverse osmosis and solar evaporation/collection of water

answer

methods for desalinating sea water to produce fresh water includes

question

can help purify water and also provide recreational opportunities

answer

artificial wetlands

question

excessive water use lowers a water table and weakens the substrate

answer

sinkholes can occur when

question

subsidence

answer

sinkholes are an extreme form of

question

increase groundwater recharge by constructing artificial wetlands that use treated municipal wastewater

answer

one reasonable way to prevent sinkholes might be to

question

increased water consumption through development and urbanization

answer

according to the federal emergency management agency, the number of human-induced sinkholes has doubled since 1930. insurance claims increased from 1200% from 1987 to 1991, costing nearly $100 million. A major reason for this is

question

they should limit development and recycle water

answer

you have been hired by a small town on the florida coast to give its residents advice about avoiding further sinkholes. you tell them that

question

positive feedback loop

answer

cattle on an open range, in some areas, may compact fragile soils while grazing. this can damage plant roots, leading to fewer, smaller plants, which may in turn cause cattle to graze more and work harder to obtain food. This is an example of a

question

lithosphere, hydrosphere, and atmosphere

answer

the physical, abiotic componets of our planet can be divided into the

question

transitional zones between ecosystems

answer

ecotones are the

question

sedimentary rock and fossil fuels

answer

the largest pools in the carbon cycle are

question

as we produce synthetic fertilizers and apply them to crops, lawns and parks

answer

humans have dramatically altered the rate of nitrogen fixation into forms usable by autotrophs

question

decreases/increase

answer

in an eutrophic aquatic ecosystem, dissolved oxygen_____and dissolved macronutrients_____

question

groundwater

answer

one-fifth of earth's total freshwater supply is in

question

agricultural irrigation

answer

humans use freshwater primarily for

question

usually be used from sinks for irrigation and watering lawns

answer

gray water can

question

possibility of eutrophication

answer

the fish in the local lake at the local park are dying. a professor from the local college comes to investigate, and first she measures the dissolved oxygen. she wants to check the

question

used as crop fertilizer in the united states

answer

much of the "biosolids" material that is the end product of a water treatment plant is

question

groundwater/leaking storage tanks

answer

a recent study has revealed that chlorinated hydrocarbons, gasoline and other volatile organic compounds (VOC's) have become significant pollutants in_____from_____

question

will probably continue because the environmental impacts of dams are reviewed periodically

answer

dam removal in this country

question

bottled water is no safer or purer than most samples of tap water

answer

recent research that analyzed the content of commercial bottled water indicates that

APES Chapters 5 and 15 Practice/Test – Flashcards

Unlock all answers in this set

Haven't found what you were looking for?

Search for samples, answers to your questions and flashcards