16. A "greenhouse gas" is one that absorbs infrared radiation (heat) and traps that heat in the atmosphere. The greenhouse
effect is a naturally occurring effect that is important to life on
the planet. Without this effect, the earth would be too cold for life
to exist.
How does an excess amount of CO2 in the air contribute to
Earth's warming? Use the diagram for reference.

depends if youre on plato or another site

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.