Find the number of excess electrons on the sphere.

Aplane flies directly between two cities, a and b, which are separated by . from a to b, the plane flies into a headwind. on the return trip from b to a, the wind velocity is unchanged. the trip from b to a takes less than the trip from a to b. what is the airspeed of the plane, assuming it is the same in both directions

The substances that are necessary for producing of certain hormones and that store and transport vitamins

The mantle is made up of which structural zones?