Which of the following is a disadvantage of using a model to represent a real-world system or structure? A.
A model cannot be built to scale.
B.
A model cannot replicate all real-world conditions.
C.
A model cannot represent the building materials.
D.
A model cannot be used to describe small objects.

Could someone me with number one you

Hormones are chemical molecules produced by endocrine glands. one such endocrine gland is the thyroid gland, which synthesizes the thyroid hormone, which in turn affects the heart muscles. which two statements describe the probable reason for the function of the hormone? the cells in the heart have specific receptors that allow for the intake of hormones. the heart and the endocrine glands have the exact same types of cells. all cells make the same types of hormones. thyroid hormones show their effect on the heart by means of specialized cells. thyroid cells and cardiac cells have different dna.

Knowing the importance of the essential elements, why would someone chose a diet that does not address all of them?