What are hydrogen bonds and how do they affect the physical characteristics of water?

Explanation:

A hydrogen bond is a common type of chemical bond in organisms. As the name suggests, this type of bond involves a hydrogen atom. The hydrogen is attracted to a strongly electronegative atom, such as oxygen, fluorine, or nitrogen of a polar covalent bond in the same or another molecule.

This gives water unique properties, such as a relatively high boiling point, high specific heat, cohesion, adhesion and density.

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.