Answer:
The correct answer is - to provide a slightly cooler temperature.
Explanation:
The scrotum is a sac pf skin and superficial fascia that contains testes present outside of abdomopelvic cavity or ventral body cavity, hanging provides a slightly cooler temperature f at roots of penis.
Testes produces sperm, for the sperms it require to be cooler temperature than the body cavity or optimal sperm production will be hampered. Scrotum gives 3 degree temperature less than the body cavity.
Thus, the correct answer is : to provide a slightly cooler temperature.
No hydrogen’s atomic number is 1 it has one proton, Uranium is much heavier element with 92 protons per atom.
The answer is; electron microscope
This microscope has the highest resolution than the other hence able to view smaller molecules. The reason for its high resolution is because it uses a beam of electrons to view its specimen. A beam of electrons has a shorter wavelength (in order of 1000s of magnitude) compared to visible light. Therefore, this microscope is able to view the structure of DNA and proteins.
Answer: Water can dissolve salt
Explanation:
The polarity of water molecules enables water to dissolve many ionically bonded substances.
Salt (sodium chloride) is made from positive sodium ions bonded to negative chloride ions.
Water can dissolve salt because the positive part of water molecules attracts the negative chloride ions and the negative part of water molecules attracts the positive sodium ions.
The amount of a substance that can dissolve in a liquid (at a particular temperature) is called the solubility of the substance.
The substance being dissolved is called the solute, and the substance doing the dissolving is called the solvent.
An isotonic solution refers to two solutions having the same osmotic pressure across a semipermeable membrane. This state allows for the free movement of water across the membrane without changing the concentration of solutes on either side.
