The most likely function of the structure labeled X in the above figure is- * 0000)
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100
anchoring the virus to a cell
injecting viral DNA into a cell
assembling the parts of a virus
O storing and protecting viral DNA

d statement

explanation:

the answer to your question is tooth decay.

phosphorus cycle

explanation:

the phosphorus cycle is the way that compounds of the element phosphorus, an essential nutrient, are recycled in the environment. plants absorb phosphorus compounds from the soil, and decaying organic matter, including both plant matter and animal droppings, returns it to the soil. phosphorus is a vital part of atp, the energy currency of all cells, and is vital to all forms of life.