Some bacteria are facultative anaerobes, which usually produce atp by aerobic respiration but are also capable of switching to fermentation when there is a lack of in their environment. a) water eliminate b) oxygen c) glucose d) carbon dioxide

c

Explanation:

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

d. changes in climate and historical records

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