For an answer to be complete, the units need to be specified. Why?

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

To run the physics cart, the fan speed of the cart is manipulated. this is the (blank) variable. the cart accelerates due to the speed of the fan. acceleration is therefore the (blank) variable. a “constant” is a parameter that stays the same regardless of the variables. one parameter of the cart that is held constant is the (blank) .

In a star, nuclear fusion occurs in the a. photosphere. b. corona. c. radiative zone. d. core.