At room temperature and normal atmospheric pressure, covalent compounds may exist as a solid, a liquid, or a gas, whereas ionic compounds exist only as solids. ionic compounds exist in stable crystalline structures. therefore, they have higher melting and boiling points compared to covalent compounds.
Answer:
movement
Explanation:
the ability to move from one place to another
The correct answer is ferns and horsetails.
<span>Recent research analyzes have shown that there are three monophyletic groups of vascular plants: 1. lycophytes, 2. seed plants and 3 a clade including horsetails and ferns.</span> <span>The monophyletic group includes a group of organisms descended from a single ancestor.</span>