numerical question a single movable pulley to lift a load of 800 N applying 300 N force. calculate the efficiency of the pulley.​

Explain what will happen if decomposers were apsent from a forest ecoysystem.

Adolphin emits ultrasound at 100khz and uses the timing of reflections to determine the position of objects in the water. part a what is the wavelength of this ultrasound? assume that temperature of water is 20 degrees c. answer in cm

Give me a example of a decomposer. explain what would happen if decomposers were absent from a forest ecosystem