The answer is the last one: amoebas, yeasts, hydras, and ferns
        
             
        
        
        
Answer:
Scientists repeats the steps in cycle mode and in order to be sure about the results he/she chosen.
 
        
             
        
        
        
Two five dollar bills = ten dollars 
10+10+10+10=40+286=326
        
                    
             
        
        
        
Answer:
<u><em>Galapagos finches</em></u><u> have various beak sizes that make foraging for food more successful.</u> 
Explanation:
Organisms evolve over time due to changes in their genome. These are pontaneous, and occur in DNA at random. These changes are called mutations and form alleles or different forms of a gene. 
Over time within a population, the number alleles increase the variation of the population. These variants may confer specific traits within an individual, that may confer a biological advantage.
Thus, the trait may make the organisms more capable of obtaining food, shelter a mate etc. or ensure survival, i.e. they are able to pass on their genes to the next generation.
 
        
             
        
        
        
Answer:
The answer is: Receptor A because the ligand concentration is greater than the Kd.
Explanation:
Receptor A because the ligand concentration is greater than the Kd., because the conformation of a receptor protein composes the functional state. Ligands include substrates, inhibitors, activators, and neurotransmitters. So, Affinity is a measure of the strength of attraction between a receptor and its ligand.