Answer:
NATO
Explanation:
NATO is an alliance between most of the Europeans countries and the US to a possible military invasion (in other words from a military invasion from Russia)
A *life support system* is defined as the interrelationship between living beings and environment.
Answer:
answer is B.
Explanation:
it shows that harappa could store excess food to save,sell or trade with others.
Answer:
918, at the end of World War I.
Explanation:
Answer:
The ecological effects of acid rain are most clearly seen in aquatic environments, such as streams, lakes, and marshes where it can be harmful to fish and other wildlife. As it flows through the soil, acidic rain water can leach aluminum from soil clay particles and then flow into streams and lakes.