Answer:
A chemical equation is balanced when the number of each kind of atom is the same on both sides of the reaction.
Explanation:
     The law of conservation of matter (except in nuclear reactions) indicates that atoms can neither be created or destroyed.
     The number of atoms that are in the  reactants must be the same as the number of the atoms that are in the product.
     The number and types of molecules can (and will) change. The atoms that make up the molecules are rearranged but the number and kinds of atoms stay the same.   
 
        
             
        
        
        
Answer:  Carbon monoxide, or "CO", is a compound.  This is a homogeneous compound (not a mixture).
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The average atomic mass of Boron: 10.431 amu
<h3>Further explanation  
</h3>
Isotopes are atoms whose no-atom has the same number of protons while still having a different number of neutrons.  
So Isotopes are elements that have the same Atomic Number (Proton)  
Atomic mass is the average atomic mass of all its isotopes  
In determining the mass of an atom, as a standard is the mass of 1 carbon-12 atom whose mass is 12 amu  
Mass atom X = mass isotope 1 . % + mass isotope 2.%  + ...
The average atomic mass of boron :

 
        
             
        
        
        
Answer:
Explanation:Artificial selection is distinct from natural selection in that it describes selection applied by humans in order to produce genetic change. When artificial selection is imposed, the trait or traits being selected are known, whereas with natural selection they have to be inferred. In most circumstances and unless otherwise qualified, directional selection is applied, i.e., only high-scoring individuals are favored for a quantitative trait. Artificial selection is the basic method of genetic improvement programs for crop plants or livestock (see Selective Breeding). It is also used as a tool in the laboratory to investigate the genetic properties of a trait in a species or population, for example, the magnitude of genetic variance or heritability, the possible duration of and limits to selection, and the correlations among traits, including with fitness.