What is the force caused by wind pushing on a building?

There are three types of wind load or wind forces.

Uplift load is the first one; this is when the wind flow pressures create a strong lifting effect.  Wind flow under the roof pushes upward, while wind flow over the roof goes upward.

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.