Answer:
tightly packed group of older stars
large grouping of more than two stars
loose, disorganized star cluster held together by gravity
Human environment interaction are essentially the ways in which humans affect their environment and how they are affected by their environment. In Italy examples of this could be Italians who fish the Mediterranean coastal waters. Other examples could be Italians who farm or Italian factories which release pollutants into the environment. Any number of events could count as human environment interactions.
Our planet, Earth appears blue due to the mass amounts of water and lacks on its surface.
