Answer:
Boundary of the heliosphere
Explanation:
It is the spherical region around the sun that is filled with solar magnetic fields.The shape of the heliopause fluctuates an is influenced by a wind of interstellar gas caused by the suns motion through space.
Answer:
The answer is B. Van der Waals forces are weaker than ionic and covalent bonds.
Explanation:
In general, if we arrange these molecular forces from the <u>strongest to weakest</u>, it would be like this:
<h3>Covalent bonds > Ionic bonds > Hydrogen bonds > Dipole-Dipole Interactions > Van der Waals forces</h3><h3 />
Covalent bonds are known to have the strongest and most stable bonds since they go deep and into the inter-molecular state. A diamond is an example of a compound with this characteristic bond.
Ionic bonds are the next strongest molecular bond following covalent bonds. This is due to the <u>protons and electrons causing an electro-static force</u> which results to the strong bonds. An example would be <em>Sodium Chloride (NaCl)</em>, which when separated is <em>Na⁺</em> and <em>Cl⁻</em>.
Van der Waals forces, also known as Dispersion forces, are the weakest type of molecular bonds. They are only formed through <u>residual molecular attractions when molecules pass by each other.</u> It doesn't even last long due to the <u>uneven electron dispersion</u>. It can be made <u>stronger by adding more electrons in the molecule</u>. This kind of molecular bonds appear in <em>non-polar molecules</em> such as <em>carbon dioxide</em>.
The Ferrel cell is the middle cell, one of the three cells in each hemisphere in which air circulates through the entire depth of the troposphere. This cell occurs between 60 and 70 degrees north and south and <span> the surface wind flows from a southerly direction in the northern hemisphere. From the given options, in a Ferrel cell a Westerlies can occur. </span>
A human needs approximately 2-5 percent of protein for the typical energy needed daily. Protein is one of the most important building blocks in the body. It helps the bones, muscles, skin, blood, and cartilage. A humans nails and hair are made of protein. The protein your body uses also repairs tissues and build new ones.
Answer:
The cell theory developed most quickly due to the invention of the microscope. Robert Hooke was the first scientist who saw cells in cork. After this discovery, a wide numbered of researches were made and cell theory was developed. The basic cell theory explained that how every living thing was made up of cells. After this, a lot of additions have been made in the cell theory and today the cell theory is known to have five basic postulates.