The hypothesis that the scientist could test in his investigation is as follows: IF plants are given more than 2.0mg of magnesium, THEN their growth will be negatively affected. 
<h3>What is an hypothesis?</h3>
Hypothesis is a tentative conjecture explaining an observation, phenomenon or scientific problem that can be tested by further observation, investigation and/or experimentation. 
An hypothesis is commonly referred to as an educated guess because it tends to provide a temporary explanation for a phenomenon. 
According to this question, a scientist investigated whether giving plants different quantities of magnesium affected their growth. He measured growth by counting the number of new leaves produced. 
The hypothesis of the scientist regarding the above experiment could be as follows: IF plants are given more than 2.0mg of magnesium, THEN their growth will be negatively affected.
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Answer:A herbivorous duck
Explanation:A primary consumer is an organism that eats producers. Primary consumers are always herbivores.
 
        
                    
             
        
        
        
Answer:
Solar Radiation
Explanation:
Increased carbon dioxide in the atmosphere leads to increased absorption of Solar Radiation.
 
        
             
        
        
        
The answer you are looking for is: 
D.) Eukaryote 
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Three
different ways the relatedness of species could be assessed is through:
<span>1.   
</span>Their genotype. Similarity in DNA between the species is a good
indication of their relatedness.
<span>2.   
</span>Their phenotype. If the two species have similar body form and function,
then there is a good possibility that they are related.
<span>The presence of intermediates, either living
or in the fossil record, can show relatedness between two species.</span>