I think should do the trick A and D
        
             
        
        
        
hi there 
your answer is :they  asexual 
The structure of viruses allows them to succeed in their main mission—reproduction. the Ly tic Cycle Once attached to a host cell,after a virus injects its nucleic acid into the cell. The nucleic acid takes over the normal operation of the host cell and produces multiple copies of the virus's protein coat and nucleic acid the host will get sick and yes, might die from it .
A large percentage of microorganisms, the prokaryotes (those without a nucleus) reproduce asexually.
I hope this helped u out 
have a great afternoon 
FaithRawlins14
 
        
             
        
        
        
Glucagon
This is a hormone that deals with blood sugar homeostasis. When blood sugar levels are low, glucagon is produced to convert the fats in the reserve back to glucose until normal levels are achieved.
Explanation:
Bone remodeling involves coordinations of osteoclasts and osteoblasts cells in the bone. The former breaks down bone tissue while the latter mineralizes bones. Calcium is the main ion in the body significant in mineralization of bone. Excess Ca2+ is stored in bone while low calcium levels in blood result in bone resorption.  
Stress on a bone also causes increased mineralization to strengthen the bone against this stress. This is why astronauts when they go to space, due to less stress from low gravity, bone loses its mass. When they return back to earth, the bone readjusts to the increased stress from higher gravity by increased mineralization. 
The hormone responsible for bone homeostasis is parathyroid hormone. 
Learn More:
To learn more about bones check out; brainly.com/question/4128260
#LearnWithBrainly
 
        
             
        
        
        
Darwin's theory of evolution by natural selection can explain how antibiotics are becoming defective because the bacteria that is trying to be fought off might have had a mutation making it more likely to survive. Once that surviving bacteria makes offspring most of the first generation will die from the antibiotic but soon all of their offspring will produce a resistance to that antibiotic. 
        
             
        
        
        
D: The reactions take place in the thylakoid of the chloroplast.