If NOCTURNAL ACTIVITY is one of the choices, that's your answer.
Answer:
Electrons
Explanation:
Electrons from the outershell so both of the atoms have a stable outer shell
A challenge to traditional (pre-1860) ideas about species came from embryology, when it was discovered that embryos of dissimilar organisms, such as sharks and humans, resemble each other. Embryology involves the study of the formation and the development of an embryo and the fetus. It is one type of evidence of evolution such that the embryos of many different kinds of animals, mammals, reptiles, birds, fish among others, are similar showing a common ancestry.
Nucleus has genetic material (DNA) inside it, so it commands the cell about how it has to be function......
Spawning.......................................................
