3. Is it possible that all elements of an Eco-system stay in balance with each
other? If YES, what do we call such an Eco-System

yes

Explanation:

the food chain is a HUGE part of the eco-system  because it is based off of plant animals and even the sun which is what makes up most of our earth

a.) a destruction fo cells by viral reproduction

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.