Special vehicals or non no polluting
A. The fossils are an extinct species of elephants, and they’re related to present-day elephants.
The fossils are an extinct specie of elephants, and they're related to present day elephants.
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Answer: Option B) 4 only.
The bacterium can be properly described as a commensal only
Explanation:
A biological association where one of the two organisms benefits while the other neither benefits nor get harmed describes Commensalism.
For instance, this bacterium derives nutrition from man, and man is neither benefited or harmed.
Thus, the bacterium is a commensal
The answers is B. NADH in mitochondria