In an endothermic physical or chemical change,.

a)the potential energy of the system increases
b)all of these
c)the system absorbs heat from its surroundings
d)kinetic energy is converted into potential energy and seems to disappear

c

Explanation:

If chemical equation neads heat to happen it's caled endothermic

eg. CaCO3 ---> CaO + CO2 (there is supposed to be a little t above the arrow)

distance, luminosity, brightness, radius, chemical composition, and temperature

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be