Answer:
A.) NO₃⁻
Explanation:
NO₃⁻ = nitrate
NO₂⁻ = nitrite
NH₃ = ammonia
N₂ = nitrogen (nitrogen naturally exists as a diatomic molecule)
They produce saliva which is essential for the breaking down of carbohydrates.
<h2>
Answer:</h2>
Blood Is A Heterogeneous mixture.
<h2>
Explanation:</h2>
Heterogeneous mixture is a mixture that is made up of different substance that remains physically separated which means the cell organelles (Red blood cells, white blood cells, platelets etc.)present in blood does not mix completely and hence get precipitated after kept still for a while.
There are three ways to identify a Heterogeneous mixture.
- It has chunks of stuff that you are able to see with your eyes.
- It appears cloudy(blur).
- After a while, the substance will separate into layers at settle at the bottom(gets precipitated).
Result: Blood is a Heterogeneous mixture
If there are respiring organisms within that sample of air, the partial pressure of oxygen decreases because the organisms utilize it for respiration activities.
Answer:
They create models of genes, proteins, and traits. In sexual reproduction, each parent randomly passes on one of its two copies of each gene to its offspring. ... Each offspring can inherit a different combination of gene versions, so siblings can have different traits from each other and from their parents.
Explanation:
