How does a comet change when it comes close to the sun

A comet is like a giant dirty snowball, the size of a town or city. It is made of ice, dust, and small pieces of rock. As a comet gets closer to the Sun, it starts to melt. It becomes surrounded by lots of gas and dust.

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.