Answer:
D)They ensure valid results.
Explanation:
Because: Some of the work done by the machine is used to overcome the friction created by the use of the machine. ... Work output can never be greater than work input. Machines allow force to be applied over a greater distance, which means that less force will be needed for the same amount of work.
Hope this helps!
It is paramecia, euglenas, and mold. These are all unicellular, eukaryotic organisms.
Osmosis is gradual absorption. ... An example of osmosis is when red blood cells, which have a high concentration of protein and salt, are placed in a lower concentration fluid like water, the water will rush into the red blood cells.
Answer:
Its B i think hope it helps
Explanation:
