Answer:
Cluster analysis or clustering is the task of grouping a set of objects in such a way that objects in the same group (called a cluster) are more similar (in some sense) to each other than to those in other groups (clusters).
Either a mountain or a valley. :)
the answer is tectonic plates
C multiple choice no problem
Answer:
<em>Reservoirs</em><em> </em>
Explanation:
a reservoirs is an artificial lake called man-made Reservoirs.
