Answer:
The correct answer is - can be explained by the law of dominance.
Explanation:
In this experiment of Gregory John Mendel where he made a cross between a purebred tall plant and a purebred dwarf plant and in the first generation all the offspring were tall.
It can be explained by that every offspring get one allele from both parents and in purebred both alleles are either dominant or recessive and both parent plant gives one allele which makes a heterozygous condition in which the dominant allele masks the recessive allele and offspring express phenotype of the dominant parent.
 
        
             
        
        
        
Make sure you do not use the exact same thing... I recommend you do this "Expiriment" on your own! :) But I hope this helps! 
 
        
        
        
EDTA inhibits the activity of DNase during DNA isolation process.
DNase is an enzyme which degrades DNA using divalent metal ions like Mg^{2+} . These metal ions act as cofactor for the proper functioning of DNase. 
EDTA chelates the divalent metal ions and thus does not allow DNase to access them. 
Therefore in this way DNA is prevented from degradation during its isolation.
 
        
             
        
        
        
Mass/volume 
<span>for an irregular solid, the easiest way to determine volume is to fill a graduated cylinder to a certain level, record the level of water, then carefully place your solid in the cylinder and record the height of the water after the solid is in.
</span><span>the volume of a regular solid by measuring the lengths of its sides and determining the volume by multiplying length x height x width </span>
        
             
        
        
        
I disagree because although recycling is good, Earth firstly is not a closed system and new matter enters the environment all the time, such as comets.