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
Earthquakes and volcanoes occur along the edges of the plates. ... When plates move apart, they produce new ocean floor as magma from the mantle rises up through volcanoes and deposits new rock along the plate boundaries. In some areas plates slide alongside each other, neither creating nor destroying land.
Answer:
- United States
- Canada
Explanation:
As per the question, the two countries that concluded the construction of 'St. Lawrence Waterway' would be the United States, as well as, Canada. The waterway construction began in the year 1954 and took five long years and it was completed in 1959. The project was a joint venture between the U.S. and Canada which is an arrangement of several channels, waterways, and locks that allows the easy travelling of ships towards the Great Lakes located in Northern America from the Atlantic Ocean. The seaway is elongated for 595 Km beginning from Montreal to Port Colborne.
Answer:
False
Explanation:
Russia is the largest country in the world but is sparsely populated
