Answer:
B
Explanation:
It must <em>always </em>be buried quickly that's the whole point.
 
        
                    
             
        
        
        
Answer:
 Radioisotopes are radioactive isotopes of an element
Explanation: Radioactive isotopes are detected by: photographic film.
a cloud or bubble chamber.
a liquid scintillation detector.
a Geiger-Muller counter.
 
        
                    
             
        
        
        
Answer:
1/4
Explanation:
Given that the F2 cross produces offspring according to the expected 9:3:3:1 ratio. 
YyRr X YyRr:
Let us break the dihybrid cross into individual monohybrid crosses. 
Yy X Yy :
     Y     y
Y  YY  Yy
y   Yy   yy
2/4 or 1/2 of the offspring are heterozygous for the trait.
Similarly, in Rr X Rr cross, 1/2 of the offspring are heterozygous for the trait.
Together, 1/2 * 1/2 = 1/4 of F2 plants are expected to be heterozygous for both traits.
 
        
             
        
        
        
Something very useful and widely used from a volcano is the Basalt fibre because it has the advantage of good combination properties. It is aplied in fire-fighting, environment protection, aviation, the arms industry, atomobile and plastics and even in the construction industry