<span>the magnetic compass and gunpowder</span>
<span>There Are Four Main Arthropod Families.
Arthropods Account for 80 Percent of All Animal Species
Arthropods Are a Monophyletic Animal Group
The Exoskeleton of Arthropods Is Composed of Chitin</span>
I would say site because they need to know what place they are talking about.Hope this helps :)
Answer:
The average flow velocity of a river increases along its long profile. This makes sense; along the profile, more potential energy is converted to kinetic energy, increasing the velocity. This is only the average velocity however; a cross-section of a river shows that the velocity varies from one side to the other.
Explanation:
