One of the most poplar examples of commensalism is the relationship between cattle egrets and livestock. The cattle egret is a common species of heron that is found in most regions of the world, and is mostly seen moving along with herds of cattle. This bird moves about in pastures, and follows livestock such as cattle and horses.
What was the investigation? But from my best guess I'm assuming it's the second option. This may be incorrect.
Well lets see here, The definition of population is a particular section, group, or type of people or animals living in an area or country. So it would be D.<span>
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