A body of water can be depleted of its oxygen by
A>> viruses and parasitic worms.
B>>organic wastes.
C>>sediments and suspended matter.
D>>organic compounds such as oil, plastics, solvents, and detergents.
E>>all of these answers
2006-12-12 22:28:17 · 6 answers · asked by tony t 1 in Science & Mathematics ➔ Chemistry
B>>organic wastes
Explanation:
A) Virus do not respire outside of it hosts, so level of oxygen remains the same
B) Organic waste cause the growth of bacteria, which respires and reduces oxygen level over time.
C and D) they are not living creatures and hence does not require oxygen.
2006-12-12 22:31:05 · answer #1 · answered by Anonymous · 0⤊ 0⤋
I disagree with some of ansnages response...
1. All organisms that exist in aerobic environments need oxygen.
That includes parasitic worms.
2. C & D may not be living, but they do REACT with (i.e. consume) oxygen. This is called COD or Chemical Oxygen Demand...which is in addition to Biological Oxygen Demand (which is what his answer is aimed at).
Solvents and detergents (some, tho' not all) will consume O2 as they oxidize and decompose. In fact all organic wastes do this. Oil consists of unsaturated long-chain molecules with double bonds that can be oxidized by O2 over time.
Gotta go with E.
2006-12-12 23:08:37 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Here is how I figure it:
A. Viruses and parasitic worms cause dead whatevers, which contribute nitrogen, the organisms that decay then suck up oxygen
B. Organic wastes are decayed by organisms that suck up oxygen
C. Sediments and suspended matter rust or rot sucking up oxygen
D. Organic compounds also oxidize and/or rot (yes, there are organisms that eat oil and plastics - and they suck up oxygen
SO: E. all of these answers
2006-12-12 23:27:55 · answer #3 · answered by Gina C 6 · 0⤊ 0⤋
couple of correct answers above.. BOD & COD are part of your answer (biological oxygen demand & chemical oxygen demand) they do what they say on the tin - 'demand' oxygen from the water. Hence E is the answer
research these two key phrases and you will have a very complete answer to your question. Could then go on to discuss aeration techniques to get oxygen back into the water again....
Hope this helps
2006-12-15 05:40:23 · answer #4 · answered by ? 7 · 0⤊ 0⤋
on my test said Organic waste....ggrrr I also thought all of the above
2017-04-09 15:43:19 · answer #5 · answered by BB 1 · 0⤊ 0⤋
F: fish.
2006-12-12 22:29:27 · answer #6 · answered by Anonymous · 0⤊ 1⤋