Answer:
1. Genetic engineering is when a gene is physically removed from one organism and putting it into another. 
2. A description of DNA is organic chemical that contains the genetic instructions for living things to function. The role of DNA is develop, survive and reproduce. 
 
        
                    
             
        
        
        
Answer:
they dry
Explanation:
because forests are sources of rain and without rain wetlands can't have water and grass can't grow n grassland
 
        
                    
             
        
        
        
The correct answer is option (A) Variation in the strawberry plants.
When the effect of fertilizer on the growth of two strawberry plants is tested, unavoidable source of experimental error is the variation in the strawberry plants. Variation refers to the deviation or differences from the normal plant which can be due to genetic variation. It is due to change in the DNA sequence. If any one of the two plants being tested show variation, the rate of metabolism differs and changes the growth pattern of the plant. The rate of absorption of water and nutrients is effected which brings change in the growth of the plant and causes an error in the experiment and the result. 
 
        
             
        
        
        
Answer:
well the modern day periodic table was created by Henry Moseley
 
        
                    
             
        
        
        
Answer:
Radical is an atom or a group of atoms of different elements that act as a single unit during chemical reaction.
Explanation:
For example: Hydrogen, Nitrogen,Nitride,Nitrate,Ammonium, etc.