Answer:
I believe they are internal forces.
Explanation:
Hope my answer has helped you!
Low pressure!
It tends to go from high to low in air pressure! (: If you didn't know - atmospheric pressure can be determined by something called a mercurial barometer! I hope all is well, and you pass! Good luck, rockstar! (:
Let me know if you have any questions, or any comments! (:
The French is the correct answer.
The degree of vertex D is if it is an indegree or outdegree, it is 1 degree in vertex D.
