The least reactive element in the third period is argon.
a. chloroplast and cell wall
The chloroplast contains chlorophyll, which is the stuff that makes plants green. So animals do not have a chloroplast. Only plants have a cell wall and it is what helps plants maintain their shape. Hope this helped! :)
The answer is 1000% D) Plant cells, take in small molecules through the cell membrane
Answer:
10 H atoms combine with 5 oxygen to form 5 water molecules.
Explanation:
those substances which having low boiling point or low melting point such as water they form covalent bond.
Covalent bonds form between non-metal atoms. Each bond consists of a shared pair of electrons, and is very strong. Simple molecular substances and giant covalent structures have different properties.
