What are the main reasons for health problems?

Read the table and answer the following questions. What are the reasons for chemical problems ?

Observe the following table showing different activities in the lake and thier influence. What are the reasons for chemical problems ?

What are the main reasons for water scarcity?

What are the main reasons for flowering of plant ?

What is the main reason for the fact that carboxylic acids can undergo ionisation.

What are the main parts of an eye?

What is the main reason for destruction of wild life habitats ?

What is the main reason for feeling pain in muscles after strenuous exercise ?

Collect information about blood pressure of your school teachers or your neighbours and prepare a report on their health problems?

(D) What are the organs affected by these problems?