C) are used to add the minerals in soil.​

Mix a thick, nutrient-rich compost into your soil to a depth of about 10 to 12 inches. Use a tiller or shovel for the task. Compost adds several macronutrients and micronutrients to soil, along with several trace minerals. It also can aid in making certain trace minerals more available to plants.

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they deliver oxygen to the blood

is in the form atp or adenosine triphosphate