Answer:
All of the above
Explanation:
this is because a nation's boarder can be seperated by a body of water,mountain ranges and lines of latitude and longitude.
Kola Nuts sold as trade -west africa
niger one- west africa
salt- north africa
gold- south africa
The gap between two mountains is called Saddle.
Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy. ... The binding of a substrate to an enzyme active site is termed the "enzyme-substrate complex.
