Energy is what we use to move and it comes from food.
Answer:
Natural factors of population change can't be swayed by humans. So for an example of a natural factor take an Earthquake. As of right now we can only predict when Earthquakes will. Inevitably some things will still get damaged and that just can't be helped. An Artificial factor for population change is something specifically made by humans. For an example take a genocide. If some guy decides he wants to go on a killing spree, well all I can say is that is Definitely not natural. Hope that helped.
Answer:
the methods of transmission are
1. through the air
2. contact with animals
3. consuming contaminated food/water
4. contact with contaminated objects
5. direct contact
All the others are NOT a method of transmission.
I hope this helps ! <3
Answer:
Dark chocolate ,Whole eggs
