Answer:
A. Average plant height increases with an increase in the concentration of sodium phosphate until the plants reach a maximum possible height.
Explanation:
The graph in the attachment section portrays the average height of plants (cm) on the y-axis plotted against the concentration of sodium phoshate (mg/L) on the x-axis. Based on the observation of the result in the graph, an increase in the concentration of phosphate caused an increase in the average plant height (as depicted by the upward-sloping line).
However, the plant's average height didn't go beyond 35cm despite an increase in concentration of phosphate. This is because the plants has reached a maximum possible height i.e. a height climax. Hence, they cannot grow taller than 35cm no matter the amount of external nutrients (sodium phosphate) supplied. 
Therefore, the noticeable trend that can be used to make a conclusion is that average plant height increases with an increase in the concentration of sodium phosphate until the plants reach a maximum possible height.
 
        
             
        
        
        
Answer:
the first one is plants 
the second one is animals 
the third one is plants 
the fourth one is animals
 
        
                    
             
        
        
        
By mating with desired traits is your answer
        
                    
             
        
        
        
Answer:
mrs weasley's genotype is  AA while Mr Weasley's genotype is AB
Explanation:
since the mating of Mr and Mrs Weasley results into = AA, AB, AA and AB
Mrs Weasley has homozygous type A blood while her husband Mr Weasley has heterozygous type A blood as well