One of the main contributors that american troops made to the allied war effort, apart from their numbers, was theirand.

The contributions of the United States military to the Allied effort were decisive. Since the Russians decided to quit the war, the Germans were able to move many of their troops from the eastern front to the stalemate in the West. The seemingly infinite supply of fresh American soldiers countered this potential advantage and was demoralizing to the Germans. American soldiers entered the bloody trenches and by November 1918, the war was over. Contributions to the war effort were not confined to the battlefield. The entire American economy was mobilized to win the war. From planting extra vegetables to keeping the furnace turned off, American civilians provided extra food and fuel to the war effort. The United States government engaged in a massive propaganda campaign to raise troops and money. Where dissent was apparent, it was stifled, prompting many to question whether American civil liberties were in jeopardy. In the end, the war was won, but the peace was lost. The Treaty of Versailles as presented by President Wilson was rejected by the Senate. Two dangerous decades of political isolationism followed, only to end in an ever more cataclysmic war.

Explanation:

part a. there were 250 teenagers surveyed (100% of tenagers = 250)therefore 1 % = 250/100 = 2.5 76% = 1% x 76 = 2.5 x 76 = 190 teenagers of the 250 surveyed liked burgerspart b: jane surveyed 25% (which is equal to 50 teenagers, i.e. a quarter of the teenagers surveyed is 50) to get 100% we simply get 4 quarters, i.e. multiply 50 by 4 = 200 teenagers were surveyed by jane. part c: it is impossible to give an example where a percentage is greater than 100%, since, by definition , percentage means "per 100".

monitor contract compliance and results of forestry activities to assure adherence to government regulations.  

plan and supervise forestry projects, such as determining the type, number and placement of trees to be planted, managing tree nurseries, thinning forest and monitoring growth of new seedlings.  

establish short- and long-term plans for management of forest lands and forest resources.  

determine methods of cutting and removing timber with minimum waste and environmental damage.  

supervise activities of other forestry workers.

by the way there is no video here.