Really, none of these answers are good. leukocytes are the body's general immune cell, and lymphocytes are a type of leukocyte. Antibodies are only used when fighting an infection that your body already has experience with, so I'm guessing it you have to pick from these answers, its "lymphocytes", but it's not really the best answer.
        
             
        
        
        
As the global population increases rapidly, societies around the world need to come up with more efficient solutions to controlling waste. Excess litter and refuse pose a serious threat to the environment. Illegal dumping and littering are two of the major contributors to pollution in our rivers, oceans, public spaces and countryside. Keeping our environment clean is a collective responsibility that we all share.
Every citizen has a role to play in protecting the environment from pollution. We need to eradicate litter and avoid irresponsible waste disposal practices immediately. There is no excuse for plastic waste in the environment – it should always be recycled and thrown away in a responsible manner. Make a point of finding out more about what can and can’t be recycled, and start separating at home. Plastic is a valuable resource that is too important to simply dump and never use again.
We need to reduce, reuse and recycle our waste wherever possible. This will keep litter out of the environment. The South African Department of Environment, Forestry and Fisheries is concerned about the amount of pollution in our rivers, dams and oceans. Every South African needs to take responsibility for their waste and disposal habits.
 
        
             
        
        
        
Protozoa-  
Cholera
Malaria
Amebic Dysentery
Fungi-
Ringworm
Athlete's foot
Histoplasmosis
Rickettsiae-
Typhus Fever
Rocky Mountain Spotted Fever
African Tick Bite Fever
 
        
             
        
        
        
The arteries carry oxygenated blood away from heart and then re-takes it back to your system
        
                    
             
        
        
        
Answer:
to be sober and concentrated
Explanation: