Which of the following would be considered an example of commensalism? a
A tapeworm living in the digestive system of a mammal. The tapeworm uses some of the food for its own energy that the mammal eats.
b
A hummingbird and a flower. The hummingbird receives food from the flower, and the flower uses the hummingbird to spread its pollen.
c
The lamprey and a fish. The lamprey attaches to the outside of the fish and utilizes its flesh for food.
d
A barnacle growing on a whale. The whale moves the barnacle to places where food can be found, but the whale is not harmed.

B) A hummingbird and a flower. The hummingbird receives food from the flower, and the flower uses the hummingbird to spread its pollen.

Explanation: Commensalism is a symbiotic relationship between two species in which one benefits and the other is unaffected.

Credit: KhanAcademy

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consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.