Answer: 
Protein
Explanation:
- The protein-covered coat that surrounds the genetic material of a virus is called a capsid.
- There are mainly three structural shapes of a capsid :
-  Icosahedral 
- Prolate
- Helical
- The functions of capsid includes:
- Protection of viral genome i.e., either DNA or RNA from dissolution.
- Helps in penetration of virus in host cells. 
For More Information:
brainly.com/question/17846775
 
        
                    
             
        
        
        
Sea stars (or starfish) feed off the oyster beds. If the oyster beds were destroyed it would deplete the major food source of the sea stars and they would begin to diminish.
        
             
        
        
        
Answer:
Broad-spectrum antibiotics can cause antibiotic resistance.
Explanation:
- Antibiotics are the substances that inhibit the growth of or kill the bacteria and hence, these are used as medications for the treatment of a lot of bacterial diseases.
- These antibiotics can either be of broad-spectrum or the narrow spectrum.
- The broad-spectrum antibiotics are the ones that are effective against a variety of bacteria, both gram-positive and negative whereas the narrow-spectrum antibiotics are the ones that target only a specific type of bacteria.
- Since the bacteria can mutate very fast and hence, develop antibiotic resistance, the doctors usually avoid prescribing broad-spectrum antibiotics and only use them when the causal bacteria is completely unknown.
- Hence, in the given case the provider prescribes separate medications for both types of bacteria. 
 
        
             
        
        
        
Answer:
electromagnetic waves can travel in a vacuum
Explanation:
 
        
             
        
        
        
Answer:
d
Explanation:
four daughter cells are produced in meiosis