Answer:
A. When oxygen levels within a cell are too low for aerobic respiration
Explanation:
Fermentation is a chemical or metabolic process that occurs in organism, when a carbohydrate such as glucose is metabolized or converted to an alcohol anaerobically (absence of oxygen).
When an organism lacks oxygen within the cell, aerobic respiration would be halted, hence pyruvate produced from glucose further undergoes fermentation anaerobically.
Organisms like lactic acid bacteria and yeast carry out fermentation. The process of fermentation is widely used in food industries, such as in brewing of wine or manufacture of yogurt.
The break up of pangaea did not result in warm,wet,global climates.for example antarctica
The most common cause of delayed healing of a skin wound caused by a traffic accident is INFECTION.
Infection refers to the invasion and multiplication of harmful microbes in a wound. These microbes usually produce toxins that will prevent the wound from healing up. This could be very fatal to the health of the patient if not quickly treated.
Large mammals only have one offspring at a time.
<span><span>Some characteristics include:
All animals are multicellular, eukaryotic heterotrophs, they have multiple cells with mitochondria and they rely on other organisms for their nourishment.
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Adult animals develop from embryos: small masses of unspecialized cells
</span>Simple animals can regenerate or grow back missing parts
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Most animals ingest their food and then digest it in some kind of internal cavity. </span>Somewhere around 9 or 10 million species of animals inhabit the earth.
About 800,000 species have been identified.
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Biologists recognize about 36 separate phyla within the Kingdom Animalia.
Hope this helps,
kwrob
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