Unterstanding one and two and three understandings 4, 5 understanding 6 and 7 understandings 9 and 8 9 10
100
What is a chemoautotroph
an organism that devries energy from the oxidation of inorganic compounds
100
There are two stages of aerobic respiration, the
transitions stage and the Krebs cycle
100
What is the first step of methanogenesis
hydrolysis and fermentation
100
The process by which a fossil is formed is called
fosilization
100
there are two types of combustion What are they called
complete and incomplete
200
the concentration of carbon dioxide in the air or water should always be lower or higher?
higher
200
During the transition stage, a product of glycolysis is converted into acetyl-CoA in the mitochondria. what is it called?
Pyruvate
200
Methane is oxidized to carbon dioxide and water in the atmosphere, what is the first step
hydroxyl radical reaction
200
When deposits of peat are compressed under sediments what is formed
coal
200
What does biomass mean
The total mass of a group of organisms
300
Terrestrial Autotrophs, which are land plants, convert inorganic carbon dioxide into organic compounds via
photosynthesis
300
true or false Methanogenesis yields the least amount of energy and takes place in the most extreme aerobic conditions.
false
300
What is peat
Peat is the surface organic layer of a soil that consists of partially decomposed organic matter, derived mostly from plant material, which has accumulated under conditions of waterlogging, oxygen deficiency, high acidity and nutrient deficiency.
300
When does combustion occur
It occurs when a substance/ substances burns,
300
what does the biosphere on the carbon cycle represent
living things
400
In aquatic ecosystems, carbon is present as dissolved carbon dioxide and
hydrogen carbonate
400
Anaerobic conditions refer to an environment or a situation where there is an
absence or limited availability of oxygen (O2)
400
What is one of the most common constituents of peat?
peat moss
400
What do petrol, natural gas, wood and coal have in common?
They are all fuels, which means that they can be burned to release energy
400
What is the lithosphere
the ground essentially
500
Carbon dioxide dissolves in water and combines with water to form?
carbonic acid
500
in autotrophs, the production of CO2 through respiration may occasionally balance the intake of CO2 via photosynthesis. this is known as?
the compensation point
500
Where does peat formation begin
in waterlogged environments
500
through oil and gas formation Anaerobic conditions are created by this burial, which also generates
heat
500
what are the products of incomplete combustion
carbon monoxide, carbon and water (soot)






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