The keystone species is the one at the bottom of the pyramid, if we look at it like a pyramid. If the grass dies, then the deer cannot get food and die, and the predator cannot eat and dies, and the whole ecosystem can fall apart.
        
             
        
        
        
1. RNA polymerase unzips DNA
2. Free RNA nucleotides pair with complementary DNA nucleotides
3. The mRNA molecule breaks away as the DNA strands rejoin.
Hope this helps!
 
        
                    
             
        
        
        
Answer:
A. Some pea plants grow slowly and have few offspring 
Explanation:
This contrast the reason why Mendel chose pea plants. 
They grow rapidly and produce a lot of offspring. 
 
        
             
        
        
        
<span>The nurse should tell the patient that eating a variety of healthy food is the best source of vitamins<span>. This is should be told by the nurse in a nice and emphatic manner, especially in this case wherein patients diagnosed with HIV are particularly emotionally sensitive. While this is true, the nurse should not advise the patient to stop taking his or her supplements; especially being diagnosed with HIV, his or her immune system is very frail and needs more than the usual nutrients compared to the normal population. </span></span>
        
             
        
        
        
Answer: Could be wrong, but I think it could be ionophores
Explanation: