Which type of feathers are long and extend beyond the body for lift?

The correct answer is flight feathers.
Flight feathers are the long and asymmetrically shaped feathers which have the function to enable flight by generating thrust and lift. Flight feathers found on the wings are called remiges while those found on the tail of a bird are called rectrices.  Flightless birds also contain flight feathers, but in radically modified forms.

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Because the carnivores keep the herbivore population in check