Decomposers break down dead material
If you're referring to streams/rivers of water that run independently of another source in the ocean these are referred to as "currents" and can be very powerful depending on their location.
Su geografía física es en gran parte montañosa. Posee suaves playas en su litoral del Pacífico y planicies bajas al norte del país. Es atravesada en su parte central por la cordillera de los Cuchumatanes y parte de la sierra Madre del Sur.