I would say the answers would be 
A) respiration of living organisms.
and 
D)<span>absorption of CO2 from the atmosphere by ocean water.</span>
        
                    
             
        
        
        
In a chemical reaction, the mass of the products<span> is less than the mass of the reactants.
the first step in most stoichiometry problems is to <span>convert given quantities to moles.
Hope this helps! If it did, pls marky me brainly thank, and 5star me</span>
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 carbon monoxide (CO)  <span> is made up of a coordinate covalent bond
</span>coordinate covalent bond is formed when both electrons forming the bonding pair of electrons are provided by the same atom
        
                    
             
        
        
        
Answer:
True; When one side of a molecule is electronegative (δ-) and the other side of the
molecule is electropositive (δ+), it is said to have a dipole moment.
Explanation:
A dipole moment exists in a molecule as a result of differences in the electronegativity values between the atoms of the elements involved in the chemical bonding.
When a strogly electronegative atom such as oxygen or chlorine is chemically bonded to a less electronegative or an electropositive atom such as hydrogen, there is an uneven sharing of the electrons involved in the bonding. The more electronegative atoms tends to draw the shared electrons mostly to themselves. This induces a partially negative charge (δ-) on them while leaving the electropositive atoms with a partially positive charge (δ+).
Water is an example of a molecule having a dipole moment. The oxygen atoms are more electronegative than hydrogen and as such draw the shared electrons to themselves more, inducing a partial positive charge (δ+) on the hydrogen atoms while they themselves develop a partial negative charge (δ-). 
 
        
             
        
        
        
Answer:
it gives up electrons B. because the bond between the electrons is not very strong due to how few of them there are
Explanation: