Question

Give reasons for the following : [3]
(a) If a person had small pox once, there is no chance that he/she will suffer from it again.
(b) A person suffering from HIV-AIDS may die due to minor cold or gut infection.
(c) Health is a state of being well physically, mentally and socially.

Answer 1

HELLO!
HERE IS YOUR ANSWER
REASONS :-

(a) our body produces antibodies to kill antigens.Antibodies stay alive untill the person dies.

So,If a person suffers with small pox,the respective antigen has entered the body .so ,our body produces Antibodies which kill the antigen.Next time,when the same antigen enters his body.the body is ready to fight ,and antigens are killed by antibodies 

(b) HIV - HEPATITIS IMMUNO VIRUS
   AIDS - ACQUIRED IMMUNO DEFICIENCY DISEASE 

SO, the similar thing is IMMUNITY SYSTEM 

THIS DISEASE AFFECTS  IMMUNITY SYSTEM OF A PERSON AND
ACUTE DISEASES TURN INTO CHRONIC DISEASES,AND MAY RESULT IN SEVERE DEATH

THUS ,A person suffering from HIV-AIDS may die due to minor cold or gut infection.


(C) YES ,BEING HEALTHY MEANS A state of being well physically, mentally and socially. 

BEING NOT ILL AND BEING HEALTHY HAS A HUGE DIFFERENCE 
 
 IF A PERSON IS NOT PHYSICALLY FIT ,THAT MEANS THE PERSON IS NOT HEALTHY
IF A PERSON IS NOT HEALTHY , HE CANT MOVE SOCIALLY
 
 IF A PERSON IS A MOOD,WHICH YOU DID`T SEE HIM,THAT MEANS HE IS IN  STRESS ,THUS NOT BEING  HEALTHY 

thus ,Health is a state of being well physically, mentally and socially.

hope helped!  

-PRANEETH,
 ✪BRAINLY BENFECATOR  ✪