Examlex
What mass of arsenic (As) in grams contains the same number of atoms as 39.95 g of argon (Ar) ?
Mesoderm
The middle layer of an embryo in early development that gives rise to muscles, bones, and circulatory systems.
Endoderm
The innermost layer of cells or tissue of an embryo in early development, giving rise to the digestive and respiratory systems.
Ectoderm
The outermost layer of cells or tissue of an embryo in early development, giving rise to the formation of the nervous system and skin.
Epithelial Tissue
A type of tissue that lines the cavities and surfaces of blood vessels and organs throughout the body, providing protection, absorption, and secretion.
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