I think the answer should be : Animal.
Answer:
A
Explanation:
the density equation is :
density=mass/volume
It is a trait that can be distinguished from an individual. Such as hair color, eye color.
Plant cells have cell walls and vacuoles.
The cell wall and the vacuole is what keeps the plant standing up.
The cell wall is a rigid layer outside of the cell.
The vacuole is a space within the cell that contains water. When the plant has a lot of water, it will be rigid and stand up right. If you do not water your plant well, the plant may lose its rigidity.
Answer:
Hydrogen bond: A weak bond in which a hydrogen atom in one molecule is attracted to an electronegative atom, in the same or different molecule. Covalent bond: A type of chemical bond where two atoms are connected to each other by the sharing of two or more electrons.
Explanation: