Cocoa is made from a. cacao beans b. cacao leaves c. the meat of the cacao fruit d. milk, butter, sugar and cacao fruit

Option A, cacao beans, is the right answer.  

The cacao bean or the cocoa bean is the dehydrated and completely fermented grain of cacao called Theobroma. From the Theobroma cacao, the solids (a mix of nonfat matters) and cocoa butter (the lard) can be obtained. These cacao beans formed the basis of the chocolate and Mesoamerican foods. Thus the Cocoa is made from the cacao beans.

found in the nucleus

has mass of one amu

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.