Limestone contains calcium carbonate which comes from animals that have shells, it already has carbon. Other sources are ocean animals which create shells that combine both carbon and calcium. Their dead bodies also release carbon to the ocean. Limestone is also known as a sedimentary rock that has carbon. Outside the ocean, limestone emits the carbon and becomes part of the carbon cycle. In addition to this, limestones are widely used by people becomes a part of the carbon cycle. Its component is present on asphalt, animal feed.
        
             
        
        
        
Answer:
Genetic variability refers to a species's genetic variation as a whole. Specific changes in DNA fragments or genes are referred to as genetic variants, and each mutation of a gene is referred to as an allele.
Explanation:
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I think it is A because they can just destroy it but D is finding something natural to kill it off but it is GM so it wouldn't help so A
        
             
        
        
        
The answer is A.
Lactose is known as milk sugars.
Therefore giving you your answer- sugars add sweetness.