the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
 
        
             
        
        
        
Answer:
I think this answer of this question is very easy. If it is not right answer . you will tell me.
Explanation:
A guiding principle of the Articles was to preserve the independence and sovereignty of the states. The weak central government established by the Articles received only those powers which the former colonies had recognized as belonging to king and parliament.
 
        
                    
             
        
        
        
After the Civil War Americans began considering expanding into the west of the nation. They were inspired by the vast land and excited by its opportunities. This excitement of Manifest Destiny helped to create the American Dream. The Great expanse of the American Midwest was idealized as a vast picturesque, open expanse with the limitless possibility in store for those willing and able to tame the land. The problem was that were was no wood on the plains, Mountains made building the railroad more difficult and the barren, dry landscape made settling a challenge.
Families went to the West excited to create a life of their own out of nothing. The idea of farming brought them a great opportunity. But farming in the Plains revealed to be very challenging. The landscape was incredibly dry and there was a minimal rainfall. Families struggled to keep their crops growing and producing, and when they succeeded, storms often destroyed their harvests.
There was also a myth regarding the Native Americans that pictured them as uncivilized savages. However the Native culture was an advanced and sophisticated one, and the term uncivilized depends on one’s viewpoint. They were always depicted as the villain of the story, often the one-dimensional character that is bent on theft in fictional stories. 
 
        
             
        
        
        
Each element has its unique properties, each contain a different number of protons and neutrons giving it its own atomic number and mass number 
Explanation:
silver is (uncountable) a lustrous white metallic element, atomic number 47, atomic mass 10787 symbol ag while iron is (uncountable) a common. inexpensive metal often black in colour that rusts is attracted by magnets and used in making steel 
 
        
             
        
        
        
Answer:
1.   Them being for the sake of their economy, religion and glory.
2. They wanted to improve their economy for instance by acquiring more spices, gold, and better and faster trading routes.
3. they really believed in the need to spread their religion, Christianity.