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
Wetlands are standing bodies of freshwater, just like lakes and ponds. however, wetlands are different from lakes and ponds because wetlands have <span>shallow water and emergent vegetation.
Hope this helps !
Photon</span>
Answer:
4) C.
Explanation:
Because Venus' poles are slmost straight up and down, the sun is not hitting it differently in different places. It does not have seasons.
The population of Oregon which is given above may also be expressed in scientific notation as,
4 x 10^6
The magnitude of this number is the exponent of 10 in the scientific notation. Thus, the answer is letter "B. 6".
The answer will be 261.8 because the tenths are the 1st digits after the decimal points which rounds up the 9s to the the 80 but you don’t have to include the zero on the final answer
