Explain why egg and sperm cells are not in important to protozoa?
A. protozoa reproduce through the process of mitosis
B. protozoa are too small to have eggs or sperm cells
C. protozoa contains a nucleus so they do not need egg and sperm cells.
D. protozoa reproduce through spores

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.