The answer to this question is the sacrum. The sacrum is a triangular bone that forms the base of the spinal column. This bone has a vital role in the skeletal system and also supports the weight of the upper body of a person and this bone and many nerves are inside the sacrum.
Due to the high surface tension, the lungs remain crushed and you will not be able to breathe first.
During fertilization, the sperm and egg combine in one of the fallopian tubes to form a zygote. The zygote then descends the fallopian tube into a morula. Upon reaching the uterus, the morula becomes a blastocyst. The blastocyst then burrows into the inner wall of the uterus. This is a process called implantation.
The prenatal development process occurs in three major stages. The first two weeks after conception are called the germination period, the third to eighth weeks are called the fetal period, and the period from the ninth week to birth is called the fetal period.
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The number 1 correspond to messenger RNA.
Hola , bueno una portada es la primera plana o la cara principal de algo , en tu portada debes colocar tu nombre el nombre del proyecto , que eres de sexto grado , el nombre de tu profesor , básicamente es la presentación de lo que vas a presentar , es como la introducción.