Answer: B
Explanation: That'd be based on how it's taken care of
 
        
             
        
        
        
Biotic Factors are any living components that affect other organisms, and since soil is not alive (soil is an abiotic factor) then you can eliminate A., B., and C. D is the answer choice that has only biotic examples. 
        
                    
             
        
        
        
When neurons are not producing electrical signals we say that they are at resting phase: voltage across their membrane is called the resting membrane potential, or the resting potential.
This potential is determined by the concentration of ions (Na, K) across the membrane and by membrane permeability to each type of ion. While the ions move through channels down their gradients they lead to a separation of charge and that is what creates the resting potential.
The membrane of the neuron is much more permeable for K ions so the resting potential is close to the equilibrium potential of K+.
 
        
             
        
        
        
Answer:
HYPOTHESIS: IF the salinity of the solution decreases, THEN the vegetable mass increases. 
Explanation:
Hypothesis, in an experiment, is a testable explanation or prediction made to solve an observed problem or answer a question. It shows how one variable called independent variable affects another variable called dependent variable. It is usually written in the "IF, THEN" format. 
In this case, the question states that there is a relationship between vegetable mass and salinity of the solution. This means that the question has been asked that "Why is the vegetable's mass affected by salinity of a solution". Hence, a hypothesis can read: 
IF the salinity of the solution decreases, THEN the vegetable mass increases. 
 
        
             
        
        
        
Answer:
ok dang it i just had the answer
  Explanation: