quiz #3

Question 1

what is BOD

Answer 1

Biological Oxygen demand than measures the overall health of an aquatic ecosystem by measuring the amount of oxygen decomposers need to break down organic material

Question 2

trophic level

Answer 2

determines the cycling of matter and energy through out a food web by measuring energy seeking behaviours of consumers

Question 3

ruminant

Answer 3

consumer who has a specialized 4 chamber stomach to digest plant cellulose

Question 4

albedo

Answer 4

how reflective an ecosystem is based on color and texture

Question 5

nitrogen deposition

Answer 5

lightning and water deposit atmospheric nitrogen into the ground to be used by an ecosystem

Question 6

ammonification

Answer 6

bacteria change atmospheric nitrogen into ammonium to be used by plants and animals

Question 7

nitrifying bacteria

Answer 7

bacteria convert ammonium into usuable nitrates by plants

Question 8

dentifying bacteria

Answer 8

bacteria convert usuable nitrates back into atmospheric nitrogen to keep the cycle going

Question 9

phosphates

Answer 9

inorganic forms of phosphorus used in the bones and teeth of consumers and in producing leaves in plants

Question 10

what three ways does water make its way into the atmostphere?

Answer 10

transpiration, evaporation, sublimation

Question 11

what two ways does water join the water cycle following condensation and precipitation

Answer 11

run off, infiltration

Question 12

Explain the fast cycling of carbon

Answer 12

photosynthesis and cellular respiration cycle carbon dioxide and oxygen to provide a recripical cycle and maintian atmospheric composition levels

Question 13

explain the slow cycling of carbon

Answer 13

when carbon accumulates in the ecosystem through plant litter and decomposing organisms, there is a stored of unused carbon. this will not enter the carbon cycle again the stores are combusted (fires); forest fires or burning fossil fuels

Question 14

List the marine biomes

Answer 14

coral reef, estuary, ocean

Question 15

list the fresh water biomes

Answer 15

wetlands, marshes, ponds

Question 16

list the desert biomes

Answer 16

arid, cold, coastal, semi-arid

Question 17

list the forest biomes

Answer 17

tropical, temperate, boreal

Question 18

list the grassland biomes

Answer 18

temperate, savannah

Question 19

list the taigia biomes

Answer 19

alpine, arctic

Question 20

what happens to solar energy as it reaches the earth?

Answer 20

absorbed, reflected, scattered

only 1-2% is used by terrestrial producers

Question 21

biomass

Answer 21

weight of organism matter added to an ecosystem

usually the amount of vegetation added in an area over an yearly time period

Question 22

consumptive water use

Answer 22

water is taken from its original source, used and returned elsewhere.

Question 23

non-consumptive water use

Answer 23

water is taken from its original souce, used and sometimes treated, returned back to the original source