A disturbance would be things like lava, flows, newly formed sand dunes, or rocks left from a retreating glacier. These are disturbances because Primary Successions happen in lifeless areas, which soil is incapable of sustaining life.
The best and most correct answer among the choices provided by your question is the first choice or letter A. Margarines are products <span> made up of fatty acids that are derived from alkenes.
</span>The main ingredients in most margarines are vegetable oils like soybean or safflower oil.Vegetable oils<span> are mostly unsaturated, which is a problem because unsaturated oils are liquid at room temperature and cannot be used as spreads.
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<span>the principle of independent assortment.</span>
