Pleas help please help HELP

How can one system be consider a component of another system?

The body is a system filled with smaller systems. Each used to help out the other and benefit the body as a whole. For example, the respiratory system takes in oxygen, the heart then takes the oxygen in the blood and pumps it throughout the entire body. Then veins carry that blood to muscles and organs. Each unique system has a job to do, when one malfunctions the whole system can fail.

Explanation: Hope this helps :)

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.