Which of the following cannot be determined from the spectrum of a star? the temperature of the atmosphere of the star
the motion of the star
the chemicals in the atmosphere of the star
the chemicals in the core of the star

the answer is c i did the same question so i know that's right!

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

a coal burning power plant

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).