Answer:
While protozoans evolved early and have survived to the present day as unicellular organisms, they have undoubtedly undergone considerable evolutionary change. So the role they have is rather big because they where here from early days. Animals could of adopted and learned from them
Explanation:
Planting vegetation and installing drainage pipes will help reduce erosion.
The independent Variable or sugar
<span>Electrical signals in the body are often based on ions because ions are charged particles</span>
