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Differentiate between parasitism and commensalism.
Differentiate between parasitism and commensalism.
biology | Previous Year Question Papers
Differentiate between parasitism and commensalism.

Answer. Parasitism is a relationship between two species in which one benefits from the other and the other suffers as a result. When two species contact, one benefits while the other is neither damaged nor benefited. This is known as commensalism. Barnacles that grow on whales are examples of commensalism.

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At a certain location in Africa, a compass points $12^{\circ}$ west of the geographic north. The north tip of the magnetic needle of a dip circle placed in the plane of magnetic meridian points above the horizontal. The horizontal component of the earth’s field is measured to be $0.16 \mathrm{G} .$ Specify the direction and magnitude of the earth’s field at the location.At a certain location in Africa, a compass points $12^{\circ}$ west of the geographic north. The north tip of the magnetic needle of a dip circle placed in the plane of magnetic meridian points above the horizontal. The horizontal component of the earth’s field is measured to be $0.16 \mathrm{G} .$ Specify the direction and magnitude of the earth’s field at the location.