A train-car is to a train as a
type here
is to a polymer
and a molecule is to a
type here

Could someone me with number one you

The chemical form of energy that is useable by the cell to do work

What is the importance of having the us forest service, the bureau of land management, the us fish and wildlife service, and the national park service? to manage land resources for conservation and the development of natural resources to manage land resources for conservation and the development of urban areas to preserve historical landmarks and manage the development of urban areas to preserve historical landmarks and manage the development of rural areas