The correct answer is option (a) Scanning tunneling microscope.
Microscopes are used to see the objects at molecular level. Scanning tunneling microscope( STM) is a type of optical microscope that uses optics(light) and lenses to see the enlarged size of the object. This microscope use a small metal tip under a high voltage. when this tip of microscope is brought close to the metal, the metallic tip of microscope draws electrons from the atom (metal) to be observed. This generates an electric current. There is a computer system attached to the microscope that detects the change in the electric current. Computer plots the change in position of atoms in metal.
Answer: Osmosis
Explanation: Osmosis is a process in which water move from an area of low solute concentration to an area of high solute concentration through a selectively permeable membrane. For osmosis to occur, it must be through a selectively permeable membrane. Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.
If it leaks at the fitting, either try to tighten the fitting, or cut it off and put on a new one.
hope this helps (:
Starvation? the human population can grow so much where we populate faster than we eat food and we use up all of our resources (food).
Answer: C
Explanation: All of them could be correct, but I think this is the correct answer. I’m only in middle school, so if your not rushing you may as well wait for someone else.
