Answer:
The BOD5 for this sample is 5 mg/L
Explanation:
The BOD5 takes into consideration the difference between the initial DO and the final DO divided by the fraction of the sample tested in a 300 mL BOD flask. The problem states that the sample was directly placed in a BOD bottle so we assume that the volume used was 300 mL of the water sample. The fraction of water is 1 (300/300).
BOD5 = (10-5)/1
BOD 5 = 5 mg/L
Explanation:
1- it can quickly mobilize economic resources on a large scale
2-execute massive projects, and create industrial power.
3-It can move so effectively because it overrides individual self-interest and subjugates the welfare of the general population to achieve critical social goals.
Answer:
1.The presence of dense tropical forest provides ready sources of valuable timber.
2.Presence of many economic trees.
3.Presence of wide market for timber products within the country.
4.High demand for hardwood in foreign counties.
