Probably to not contaminate food or accidentally poison it.
Answer:
Explanation:
the meaning of valence electron is an outer shell electron with atom
Answer:
Federal government.
Explanation:
The U.S. federal government may be defined the national government that includes almost five territories, 50 states and federal district. This government includes the executive, judicial and legislative.
This federal form of government is important as it is quite effective and provide proper protection and security than the other government of the country. The states involve in the federal government has different size and do not requires the invasion from the enemies.
Thus, the answer is federal government.
Answer:
Alveoli
Explanation:
The alveoli is part of the respiratory zone. The conducting zone is the passageway of air from the outside to the lungs. Included in this zone is the nose, mouth and trachea as well.
The respiratory zone includes bronchioles and the alvveoli.
