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Depends on what they produce.
Phytoplankton are the largest producers of oxygen. Various forms of bacteria and some other life forms are the largest producers of methane. Fish as a whole are likely the largest producers of ammonia.
The ocean is a complex biome, be more specific with your question.
What else can I help you with?
What is the primary (most abundant) gas in the Earths atmosphere?
The primary gas in Earth's atmosphere is nitrogen, accounting for about 78% of the total atmospheric composition.
Secondary productivity in an ecosystem?
Primary productivity tells you how productive an ecosystem will be. It is the rate at which chemical energy is produced from sunlight, which determines the maximum amount of energy available to all higher trophic levels in an ecosystem.
What is a primary gas found in the earths atmosphere?
The primary gas found in Earth's atmosphere is nitrogen, making up about 78% of the air we breathe. Oxygen is the second most abundant gas, making up about 21% of the atmosphere.
Which is the most abundant gas in earths atmoshere?
nitrogen
What is the most abundant gas earths atmosphere?
Nitrogen
What is the outer cores most abundant elemant?
The earths outer core's most abundant elemant is silicon. :)
What is a gas that was probably abundant in earths atmosphere 3.6 billion years ago and is still abundant today?
Oxygen
What is the most abundant metal In earths core?
Iron is the most abundant metal in the inner and outer core of the Earth.
What element is the most abundant in earths lithosphere?
Oxygen is the most abundant element in Earth's lithosphere, comprising about 45% of its mass.
What is the abundant element by weight in the earths crust?
That element is Oxygen by 46.6%
I am the 2nd abundant element in the earths crust and have 14 neutrons?
Silicon
Pairs of gases that are the most abundant in earths atmosphere?
Nitrogen & oxygen.
