The structure of the sperm in the male reproductive system
The sperms The testes of the adult human male produce about 2 billion sperms per day , the lifetime of a single sperm inside the female vagina ranges from 2 to 6 hours, this...
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Boiling point and separation of the petroleum oil, Fractional distillation of crude oil steps
The boiling point is the temperature at which a matter begins to change from a liquid state to a gaseous state, The change of matter from the liquid state to the gaseous state is...
Structure and function of the ovum in the female reproductive system
The ovum (the egg cell) is the female reproductive cell in the female reproductive system, It is large (as sesame seed size) due to the storage of the nutrient materials.
The echo (the sound reflection) and conditions necessary for hearing the echo
The echo The echo is a repetition of sound produced due to its reflection, It can be used to tell how far away an object is, how fast the object is moving, and even...
