Only toms idea could be scientific since it is testable, can be tested by others, have a hypothesis, and be proven
A type of strong chemical bond in which two atoms share one or more pairs of valence electrons. Two or more atoms held together by covalent bonds. The attraction that exists between opposing (positive and negative) charges within the atom.
Answer:
to control what enters and leaves the cell
Explanation:
The nucleus controls the functions of the cell and a cell wall provides structure for a plant cell.
