None of the choices are right
<span>Scientists have determined that the center of the earth is 6371 km below the surface. But how has this been determined? Many people might answer that question by saying scientists can drill into the Earth with machines. However, the drilling rigs that scientists use can only drill about 20 km in the Earth which is not very deep! In other words, we can only drill into upper part of the crust of the earth. Extremely high temperatures and pressures within the Earth make drilling into it very difficult</span>
Cooks should use sea salt in recipes instead of regular table salt.
Answer:
ponge is a solid yet we able to compress it because it has holes in it. When we compress the sponge the air goes out of those pores.
Explanation:
<span>The reactants have a slightly greater mass. In a nuclear reaction, a small amount of mass
is converted to energy according to the equation E = mc2. The difference in mass is referred to as the
mass defect.</span>
