What is an oxygen sag curve? What changes in a river cause this effect?

Q: The data in the table below was collected by researchers to investigate the oxygen concen tration of…

A: A graph represents the relationship between different values or frequencies or readings or…

Q: Why does carbon dioxide show fluctuation each year ?

A: Oxygen and carbon are crucial chemical elements, which when bonds together forms the carbon dioxide.…

Q: You are testing a sample of water from a nearby lake that has very few fish living in it and you…

A: Diffusion from the environment, aeration of the water as it tumbles downfalls and rapids, and as a…

Q: How is the ocean a buffered system

A: Plate tectonics and seafloor spreading, turbidity currents, sediments, pH levels, atmospheric…

Q: Name the green house gas?

A: Green house effect is a process when the gases in the atmosphere absorbs the radiation from the…

Q: How does the Coriolis “Force” affect ocean productivity? How does it affect the world’s major…

A: Coriolis force or Coriolis effect is the deflection of wind towards the right in the Northern…

Q: Where does NH4 and NOx enter from the atmosphere in the N-cyle in this diagram (click on arrow)?…

A: "Many ecosystems would be unable to support the growth of plants and the creatures that depend on…

Q: Differentiate between the following types of movement observed on a wet mount or hanging drop slide:…

A:

Q: The most abundant constituent of atmospheric air is ? Oxygen Hydrogen Carbon Nitrogen

A: Atmosphere is a gaseous envelope that surrounding the earth. The air which is prevailing below the…

Q: The data in the table below was collected by researchers to investigate the oxygen concen- tration…

A: The mean is one of the measures of central tendency. Mean, median and mode are three commonly used…

Q: Calculate how many milligrams of biological oxygen demand (COD) if the BOD is 25 ppm.

A: Here COD in question is Chemical oxygen demand and BOD is biological oxygen demand. Normally…

Q: A city’s sewage outfall flows 40 ft3 /s of sewage with a BOD concentration of 30 mg/L and a DO of…

A: 58.86 mg 6.8125 mg/l - bod, 6.3125 mg/l-do level, 0.7426 mg/l-maximum oxygen that can bind to water…

Q: List any three human activities which would lead to an increase in the carbon dioxide content of…

A: Excessive CO2 concentrations can be dangerous to people. Over 5% of CO2 in the air might result in…

Q: The three images below are snapshots of the atmospheric CO2 concentration in May, July, and…

A: Introduction Global warming is the long-term warming of the Earth's climate system that has been…

Q: Identify TWO specific sources of pollution in the Ellerbe Creek watershed. Short answer please.

A: A watershed is an area of land that drains water into a specific waterbody.  It drain rainfall and…

Q: Describe the process by which ocean acidification affects the well-being of carbonate-secreting…

A: Answer: OCEAN ACIDIFICATION :  When CO2 dissolves in seawater to make aqueous CO2 (CO2(aq), carbonic…