Air pollution causes a problem in the human respiratory system due to overactivation of a stimulus. Idenfity the problem and list its symptoms.

What are the problems caused due to defective feeding of infants?

Discuss the functions of iron in human body. Mention problems due to deficiency of iron.

The thermal pollution is caused due to the rise in the temperature of air and water to a harmful lavel . It is due to the heat from

Name the common respiratory diseases. What is Asthma? State its causes and mention its symptoms.

Write three problems caused by ever increasing human population. Person may suffer from difference diseases due to air pollution-Write the names of one such diesase and state one symptom.

Explain how air sack helps pigeon in its evolution. 'Communication exchange and problem solving are two important behavioural adaptation-Prove the statements with approipriate example.

Acid rain is caused by SO_(2)and NO_(2) gases formed due to air pollution .

Thalassemia and sickle cell anaemia are caused due to a problem in globin molecule synthesis. Select the correct statement

(i) List the chromosomal disorders a human may suffer from if karyotype analysis of the individual shows 47 chromosomes instead of normal 46 (ii) Explain the cause that results in the gain of chromosome number. (iii) Mention the symptoms of any one the disorders an individual can suffer from

What environment factors may cause cancer in human ? It the water level in sea increase enormously due to global warming , what problems the humans and bio- Diversity of sunderban may face ?