TBL extra content

Question 1

Flooded areas in which the water is shallow enough to enable growth of bottom rooted plants

Answer 1

Wetlands

Question 2

Arms of the ocean into which streams flow; breeding group of marine life

Answer 2

estuaries

Question 3

Disappearance of thermal stratification when the epilimnion and hypolimnion are equal temperature; body of water behaves as a hydrological unit and mixes; generally occurs in the spring

Answer 3

overturn

Question 4

the formation of distinct layers within non flowing bodies of water due to temperature difference and density

Answer 4

thermal stratification

Question 5

living organism

Answer 5

biota

Question 6

utilize organic substances produced by autotrophic organisms as energy sources and as the raw materials for the synthesis of their own biomass

Answer 6

heterotrophic

Question 7

utilize solar or chemical energy to fix elements from simple nonliving inorganic material into complex life molecules that compose living organisms

Answer 7

autotrophic

Question 8

consists mostly of bacteria and fungi which break down material of biological origin to the simple compounds originally fixed by autotrophs

Answer 8

decomposers/reducers

Question 9

while dissolved oxygen is fatal to ______ _____, it is crucial for fish

Answer 9

anaerobic bacteria

Question 10

Reaeration of the water is dependent on limit of _______ from the surface, ______, _____ size, and ______

Answer 10

transfer-rate, turbulence, air bubble, temperature

Question 11

At higher temperatures, there is ______ of organic matter, resulting in lower _____, increased ______ rate of organisms, and lower ______

Answer 11

degradation, Oxygen, respiration, O2 solubility

Question 12

Except for _____ there is no other chemical reaction that replenishes dissolved oxygen

Answer 12

photosynthesis

Question 13

oxygen can sink and are consumed by algae as part of the _______ processes, can be consumed by _____ of biomass, or ______

Answer 13

metabolic, degradation, pollutants

Question 14

all rainfall is slightly _____ due to the dissolved CO2

Answer 14

acidic

Question 15

too high concentrations of CO2 in water affects ______ and ___ ____ of aquatic animals

Answer 15

respiration, gas exchange

Question 16

formation of _____ and ______ increases solubility of CO2

Answer 16

HCO3, CO3

Question 17

water lacking alkalinity in equilibrium with the atmosphere contains very low (dissolved) _____ levels

Answer 17

CO2

Question 18

CO2 should not exceed _____mg/L in water

Answer 18

25

Question 19

Most CO2 in the water is a product of the breakdown of ____ ___ by _____, or by metabolic processes by ______

Answer 19

organic matter, bacterial, algae

Question 20

When calcium carbonate is dissolved because of dissolved CO2, producing HCO3

Answer 20

limestone caves

Question 21

only a small amount of______ is actually present in the water

Answer 21

H2CO3

Question 22

Pure water equilibriated with an unpolluted atmosphere is still slightly _____, because _____ dissociates partly in water to produce HCO3 and _____(from the weak acid H2CO3)

Answer 22

acidic, CO2, H+

Question 23

titration with acid to pH at which HCO3 is the predominate carbonate species (pH = 8.3)

Answer 23

phenolphthalein alkalinity

Question 24

alkalinity serves as a ______ buffer, a reservoir for ______ ________, and can be used to determine the ability of water to support ____ _____, and as a measure of water ______

Answer 24

pH, inorganic carbon, algal growth, fertility