<span>These three should be the most pressing problems
-illegal immigration
</span><span>-lack of skilled labor
</span><span>-aging pollution</span>
Meteor = Space rock
Asteroids= small rocky object
Comets= ball of ice
Planet= travel around starts
Orbital radii= average distance from sun
D) Territory
For example Puerto Rico is its own country but is territory of the United States.
Heat convection. Convection is heat transfer by mass motion of a fluid such as air or water
