APES Flashcards

12583157322	Most of Earth's liquid fresh water is found ________.	underground	0
12583161574	approximately _____% of Earth's water is found in ice caps and glaciers.	2	1
12583180523	What percentage of earths fresh water is found in oceans?	0	2
12583194232	A porous, spongelike layer of rock, sand, or gravel that is capable of holding water	aquifer	3
12583200163	the worlds largest known aquifer	Ogallala Aquifer	4
12583207776	Any obstruction placed in a river or stream to block flow	dam	5
12583217462	A long, raised mound of earth used to control flooding along a river	levee	6
12583231107	a measure of the density of suspended particles (lack of clarity) in a water sample	turbidity	7
12583246031	Aerobic bacteria break down organic materials during this stage of waste water treatment	secondary treatment	8
12583253472	water leaving a waste water treatment plant	effluent	9
12583261670	the worlds largest body of fresh water	Caspian sea	10
12583280082	one-fifth of earths total freshwater supply is in	groundwater	11
12583288273	humans use more fresh water for ______ than for any other purpose	agricultural irrigation	12
12583309712	why was the irrigation of soviet cotton farming operations a problem?	it drained the aral sea and increased the salt content of soils	13
12583709052	sinkholes can result from_______	overconsumption of water from aquifers	14
12583719319	which of the following will contribute to water conservation?	watering lawns at night, using low-flow faucets, and landscaping with native plants	15
12583737604	gray water (water from laundry, showers, baths...not toilets) can be used for	irrigation	16
12583746843	which of the following is one of the major pollutants of groundwater?	agricultural chemicals	17
12583771733	the fish in the lake at the local park are dying, and a professor from the local college come to investigate. first she measures the levels of dissolved oxygen because she wants to check for	hypoxia	18
12583784997	a watershed is	areas of land that drains to a lake or river	19
12583800675	"Blue-baby" syndrome id a consequence of excess ____ in the water supply	nitrates	20
12583811605	a key characteristic of aquatic dead zone is	a low concentration of oxygen	21
12583822799	why is grain production in the great plains considered largely unsustainable?	the Ogallala aquifer is being depleted for irrigation water	22
12583835482	Overpumping groundwater in coastal areas can cause ________ to move into aquifers, making the water undrinkable.	saltwater	23
12583846875	pros and cons of dams	PROS: prevents floodry, make electricity, lake for fish CONS: Dec. river habitat, silt doesn't go to mouth of river.	24
12583878589	Overfishing. what is bycatch?	fish caught and killed that are not wanted/ eaten	25
12583903862	what did the Canadian do in 1992 in regards to cod fishing?	stopped it	26
12583908720	Bottom trawling	big net on bottom	27
12583914240	long line	long line with 1000 of hooks	28
12583926599	what can be done to help restore fish stocks in the worlds oceans?	Buy sustainable fish, Buy smaller fish, Marine preserves, monitor and limit fisheries	29
12583954788	why is fish farming (aquaculture) not a perfect solution to the overfishing problem?	have to feed fish to fish... not efficient also.... diseases can spread	30
12583966196	ocean acidification is caused by	extra CO2 in air dissolved into the water	31
12583984285	what is coral?	a symbiotic (mutualism) between animal (polup) and algae	32
12584011378	coral bleaching. cause? what happens when it happens?	cause: hot water what happens when it happens: algae is removed....and coral cant make food	33
12584030946	estuaries salt marshes and mangroves	fish and salt mix trees along coast Important bc: a lot of biodiversity filter pollutants, stabilize shorelines coast from storms	34
12584064847	Kelp forests	kill sea urchins that eat	35
12584072609	sea otters	keystone species	36
12584081743	exxon valdez, deepwater horizon are examples of	oil spills	37