Examlex
A spool of thread has an average radius of 1.00 cm.If the spool contains 62.8 m of thread,how many turns of thread are on the spool? "Average radius" allows us to not need to treat the layering of threads on lower layers.
Fetus Development
The stage of human development in the womb from the ninth week after fertilization until birth, involving significant growth and differentiation of tissues and organs.
Germ Layer
In early embryonic development, one of the three primary layers (ectoderm, mesoderm, and endoderm) that give rise to all tissues and organs of an organism.
Dermis
The layer of skin beneath the epidermis that contains nerve endings, sweat glands, and hair follicles.
Ectoderm
The outermost of the three primary layers of an embryo that develops into the nervous system, skin, and related structures.
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