Answer:
unicellular life first
Explanation:
it arose billions of years ago while multicellular life forms around at least 600 million years ago
 
        
             
        
        
        
The correct answer is c.antipsychotic drugs. 
<span>Drugs that block dopamine receptor sites are dopamine antagonist (antidopaminergic). Dopamine antagonists are a type of drugs which blocks dopamine receptors by receptor antagonism. Those antagonists are used as antipsychotics, so they have found use in treating schizophrenia, bipolar disorder, and stimulant psychosis. Also, they can be antiemetics used in the treatment of nausea and vomiting or used as <span>anti-depressants.</span></span>
        
                    
             
        
        
        
Answer:
The answer is below
Explanation:
Factor isolating question is a type of question often used by the researchers during a scientific study or social research which answers the question of what by isolating, categorizing, describing, or naming the situations accordingly.
For example:
What is the level of US Constitutional effectiveness in terms of
1. Public service holders performance
2. Civil servants performance
3. Private sectors
4. Effectiveness measured rate
 
        
             
        
        
        
Area specialists approving the framework may not comprehend plan notations.Real-world prerequisites are more vital than outline notations.It is difficult to believe in subjective proofs.So that psychological researchers can comprehend the custom hole.
        
             
        
        
        
First, he should measure how long it takes for the liquid to become clear if X and Y are mixed together. Then, he should measure how long it takes if he also adds substance A to X and Y. He will find out if substance A is a catalyst. hope this helps :)