Answer:
A) an error in either egg or sperm meiotic anaphase
Explanation:
A condition in which human contain 45 chromosomes instead of 46 is called aneuploidy or abnormal chromosome number. The most common cause of aneuploidy happens during cell division when the chromosomes do not separate properly between the two cells.
A missing chromosome or an extra chromosome is a common cause of genetic disorders.
 
        
             
        
        
        
The salmon is a key player in the food web whose removal may cause an imbalance in the whole ecosystem.
<h3>What is a food web?</h3>
A food web is a graphical diagram representing all connections between organisms in a given ecosystem.
Salmon represent the food for different types of animals in a food web, thereby their removal may cause serious harm to the balance of the ecosystem.
Salmon fish is a tertiary consumer because they eat herring which in turn eat zooplankton that eats phytoplankton.
Learn more about food webs here:
brainly.com/question/2179
 
        
             
        
        
        
Answer:
i believe the answer is C: hospitalizations
 
        
                    
             
        
        
        
Answer; 
Antibodies.
The human immune system fights infection by releasing antibodies. 
Explanation;
The immune system acts to defend the body against pathogens such as viruses, bacteria and fungi that may cause a disease. 
It does so using various types of mechanism, one is by the production of antibodies. 
Antibodies are proteins that are produced by the B-cell and are used by the immune system to identify and neutralize pathogens.
These antibodies also activates proteins known as complements which assist in the killing of bacteria, viruses and the infected cells.