D wheat and oats are the dominate crops in Japan
        
             
        
        
        
As far as I know of B would be the correct answer but i am not positive 
Good luck!!
        
             
        
        
        
Experimentation (or the experiments the scientist was doing for 10 years) could be wrong or done in an inappropriate way. The only way to know if the information is valid is by checking the way the experimentation (data) was done as well as making sure to check all other factors
        
             
        
        
        
The two categories would be Biotic and Abiotic
        
             
        
        
        
Answer;
The nucleus.
Explanation;
-The nucleus is the cell organelle whose function resembles the function of the brain in higher animals.
-The Nucleus is the largest organelle in a cell. It contains a dense structure called the Nucleolus and is surrounded by the Nuclear Envelope. 
-It stores the cell's hereditary material, or DNA, and coordinates the cell's activities, which include growth, intermediary metabolism, protein synthesis, and reproduction, just like the brain which controls or the activities of a higher organism.