Is "mula" a pangukol? pls answer​

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

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?

Crossing over is a method of (blank)?