Is a plan for the pursuit of the organisation's mission in the longer term (3 - 5 years) Is a plan for the day-to-day management of the organisation (one year time frame) A strategic plan enables management to formulate an operational plan.
Many other elements, such. as most other nonmetals (O2, N2, S8, P4, etc.) occur as molecules. 2.6 Compounds contain atoms from two or more elements, thus the smallest unit must contain at least a pair of atoms. 2.7 Mixtures have variable composition; therefore, the amounts may vary. Compounds, as pure substances, have. constant composition, thus their composition cannot vary.
Why do the oxide abundances vary as they do, and why are the variations so smooth and systematic? The answer to this is an interesting one and is dealt with in great detail two chapters from now. For now, however, it is sufficient to recognize that these systematic compositional variations exist. Crystallization of Magma I: Mineral Composition