Examlex
A central atom with 4 electron pairs (single bonds and/or lone pairs of electrons) could have which of the following molecular geometries
I. Trigonal bipyramidal
II. Tetrahed ral
III. Trigonal pyramidal
IV. Bent
Primary Germ Layers
The three initial layers of cells (ectoderm, mesoderm, and endoderm) in the early embryo from which all bodily tissues and organs develop.
Digestive Organs
Organs involved in the digestion process, including the mouth, esophagus, stomach, liver, gallbladder, pancreas, intestines, rectum, and anus.
Respiratory Organs
Organs involved in the process of breathing, including the nose, throat, larynx, trachea, bronchi, and lungs.
Extraembryonic Membrane
Membranes that support the development of the embryo, such as the amnion and chorion.
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