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
Answer:
C
Explanation:
Sparta was known for their extreme war skills and judging by history Athens was a capital city and most of the soldiers of Greece came from Sparta I guess
Answer:
headers
Explanation:
A table is the visualization of data by representing attributes or data in series of rows and columns. One important and key feature of a table is the table header. The table header gives a well defined title to use to which table is put to. It can be a "table of age of goats and gender". All tables must be titled with a header in this manner.
Schist has the highest metamorphic grade.
Answer:The answer Hydraulic Action (Wave Erosion)
Explanation: