Plzz with this question i need to know!

Note: the following questions are unrelated to the balmer series or the martian. refer to your course notes. a sun-sized star will spend most of its lifetime as a: white dwarf b. red giant c. protostar d. main-sequence star

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

What are the similarities & differences between a thermistor and a light dependent resistor in physics?