It is smelting A, C and D are good answers but A is the right question
I would have to agree with the student who claims cells are the building blocks of organs because cells are the building blocks of life. cells are all around us, even in inanimate objects.
In present day assortments, rescued or gathered flying creatures might be safeguarded in various manners. The most customary readiness is an examination skin, in which practically the entirety of the body inside the skin is evacuated and supplanted with cotton so the conclusive outcome looks like a fledgling lying on its back with its wings collapsed.
Answer:
Neutron stars are one of the possible ends for a star. They result from massive stars which have mass greater than 4 to 8 times that of our Sun. After these stars have finished burning their nuclear fuel, they undergo a supernova explosion. ... It collapses so much that protons and electrons combine to form neutrons.