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Ess Envi 7 & 11


What are 3 examples of surface water? lakes, rivers, streams
What does potable water mean? drinkable water
What's the largest watershed in the US? Mississippi River
What's an inexpensive solution to providing everyone with more fresh water to use? water conservation
Why are estuaries very productive ecosystems? because they receive nutrients from rivers and oceans
What is pollution discharged from a single source? point pollution
Why do treatment plants add chlorine to the water? to kill the bacteria and pathogens
What are 3 functions of wetlands? 1) absorb pollutants 2) traps carbon 3) flood control
Where is Most of the Earth's freshwater found? solidified at the North and South Poles
What is an example of non-point source pollution? runoff
What factors determine where living things live in ponds and lakes? temperature, sunlight, oxygen, nutrients
What organisms tends to be the base of all aquatic food chains? phytoplankton
What is the amount of dissolved salts in water known as? salinity
What is the process that increases amount of nutrients in the water through human activity, such as waste disposal and land drainage? artificial eutrophication
What is build across rivers to control river flow? dams
What's a hole that is dug or drilled to reach ground water? well
In what zone of water is the water cool and dark? benthic
Why is polluted groundwater hard to clean? 1) Ground water recharges slowly 2) Water is dispersed through large areas of rock and can cling to rock surfaces
What are 2 main freshwater wetlands? marshes and swamps
Where do estuaries receive their nutrients from? rivers and oceans
What is a place where fresh and salt water mix? estuary
What distinguishes nekton from benthos? one swims freely and the other lives on the sea floor
What are 3 threats to coral reefs? 1) sediment runoff 2) chemical pollutants 3) thermal changes
What percentage of ocean pollution is caused from a direct spill of an oil tanker? 5%
How much water does the Ogallala Aquifer supply to the US? supplies 1/3 of groundwater used in US
What are disease causing bacteria, viruses, and parasitic worms that can contaminate a water supply? pathogens
What is the accumulation of pollutants at successive levels of the food chain? biomagnification
What are the free- swimming organisms found in water? nekton
What's an area of land through which water percolated to be stored as groundwater known as? recharge zone
What is the difference between marshes and swamps? marshes are dominated by woody plants and swamps mainly contain grasses
What are 3 major threats to ocean ecosystems? overfishing, oil spills, and pollution
WHich ecosystem has the highest level of salinity? oceans
Where are the majority of marine organisms found? shallow, coastal waters
MOst ocean pollution can be traced to activities on _______ land
What is the introduction of chemical, physical, or biological agents into water that degrades the water quality known as? water pollution
What are three groups of aquatic organisms? plankton, nekton, and benthos
Where are Swamps are commonly found? flat, poorly drained land
Where is the majority of our available fresh water is used? industry
In estuaries, fresh water and salt water mix, forming a(n) ________trap. nutrient
Downstream, a river often widens and flows more ____________. slowly
Fresh water is used for irrigation in __________ worldwide. agriculture
What is a large area of land drained by a river known as? watershed
What is an artificial lake created by building a dam? reservoir
Upstream, a river is usually cold and flows ______ through a shallow river bed. quickly
Barnacles are a type of ____________, or bottom-dwelling organism. benthos
Why have many areas of the world without adequate fresh water become habitable? because water management projects have diverted water to the area
What Act required all tankers in the US waterways be doubled hulled? The 1990 Oil Pollution Act
Where in water is life diverse and abundant due to the presence of sunlight? photic zones
Identify 5 ways the YOU can conserve water in your home. THINK of 5 ways and be prepared to answer this question on the test
Created by: dcrovato



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