which living organisms is crucial to ensuring the nitrogen gas from the air becomes available as a nutrient for living things?

Bacterias

Explanation:

Rhibozium is a famous bacteria which is usually associate with the bean. That's why beans have so much protein in their composition, altough they are plants:  the Rhibozium fixes Nytrogen which is used for assembling proteins.

There are also other bacterias which are important for the process, we call them nitrobacter. They're function is, bassicaly, to converts the fixed Nytrogen (in form of NH4+) into a more available form for plants.

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.

there is no stairs in bungalow

explanation:

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