Answer:
Plants obtain water through their roots. ... The water passes through the membranes of plant cells and also fills the spaces in between the cells. Because the cells absorb the water directly, the soil must be in contact with the roots in order for the roots to absorb the water.
 
        
             
        
        
        
I think the correct answer from the choices listed above is option D. The flawed logic in this statement is an example of a false dichotomy. It is also referred to as false dilemma which involves having two opposite views  in such a way that they seem to be the only possibilities.<span />
        
                    
             
        
        
        
Answer:
B. It becomes a positive ion.
Explanation:
The number of electrons and protons is eleven in sodium. After sodium (Na) has transferred its electron to the chlorine atom (Cl) it becomes a positively charged ion. This is because as electrons are negatively charged, losing of an electron will increase the number of protons (i.e 11) as compared to the number of electrons (i.e 10) in sodium (Na) atom. Hence, a positive charge will be acquired by the sodium (Na) ions. 
 
        
             
        
        
        
Answer:
Feedback loop will fail in an ecosystem if the factors regulating the feedback mechanisms fail to function.
Explanation:
Feedback loop is the phenomena in which output is circled back in a way that it is used as input again i.e the reaction is circled back. Its a continuous process. 
There are two types of feedback loops, positive and negative, one functions to reinforce and other functions to balance. Positive feedback loops enhance the outputs while negative lower the output and keeps the balance. the variables that are involved in all these processes effect each others so, by eliminating such variables or factors will cause failure of feedback loops.