B.
because hes doing multiple things in 1 job
It is to some sea creatures. Like the ones with air filled areas like lungs and swim bladders
An example of using muscular strength would be doing things like lifting weights and things like that.
Answer:
Grid
Explanation:
The number of electrons attaining the fluorescent light is regulated by the grid in a cathode ray tube.When the heater is supplied with current, it allows the electrons to emit from the cathode. Before approaching the anode the electrons pass through grid opening. The number of electrons attempting to reach the anode may also be regulated by managing the number of electrons passing through the grid.
