When did oxygen levels start to decline from 35 percent down to today’s levels

100 percent

Explanation:

the oxgyn level todays level is 95

The oxygen levels started to decline from 35 percent down to today’s levels in 1995.

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.

we need the map to answer the question