Answer:
He said they all came from one ancestral species.
Explanation:
They all came from the same species but mutations due to their differing habitats changed them all slightly. 
 
        
             
        
        
        
Various states of matter have molecules moving at different velocities.
<h3>Molecules in matter</h3>
Matter is composed of molecules. These molecules that compose matter are in constant random motion. The kinetic energy and velocity of the molecules depends on the state of matter.
Molecules of a gas are fastest followed by molecules in a liquid. Molecules in a solid do not move at all hence solids have a definite shape.
Learn more about molecules: brainly.com/question/19922822
 
        
             
        
        
        
Answer:
there is no quiz
Explanation:
i have not seen the question
 
        
             
        
        
        
The pathway would be over active, If a ligand were stuck in the G-protein-linked receptor.
<h3>What usually happens when a ligand binds to a receptor protein?</h3>
When the ligand attached to the internal receptor, a change occurs that shows at DNA-binding site on the protein.
The ligand-receptor complex moves into the nucleus where it binds itself to regions of the chromosomal DNA. It promotes the initiation of the process of transcription so we can conclude that if a ligand were stuck in the G-protein-linked receptor, the pathway would be over active.
Learn more about ligand here: brainly.com/question/1869211