CXC CSEC exam guide: Human and Social Biology - Section E: The Impact of Health Practices on the Environment



CXC Human and Social Biology exam guide: SECTION E- THE IMPACT OF HEALTH PRACTICES ON THE ENVIRONMENT


CXC CSEC exam guide: Human and Social Biology

SECTION E- THE IMPACT OF HEALTH PRACTICES ON THE ENVIRONMENT

 

   

Specific Objectives

Students should be able to:

 

Explanatory notes

1

identify pollutants in the environment;

Definition of pollution and pollutant; including domestic, industrial and agricultural pollutants.

2

discuss the causes of water and air pollution;

 

 

3

describe the effects of pollutants on human beings and the environment;

Analysis and interpretation of data

(Link to Specific Objective B2.4)

4

 

explain the methods of controlling pollution;

 

 

5. describe the water cycle;

Diagram required; include evaporation, condensation, transpiration, respiration, filtration.

 

6. describe simple ways of purifying water in the home;

Boiling, Chlorine/ bleach.

 

7.

test water for bacteria;*

Agar plate.

(Link to Specific Objective A2)

 

8.

describe the processes involved in large scale water purification;

 

Screening, sedimentation, filtration, chlorination.

 

9.

discuss the impact of human activities on water supplies;

 

 
10. explain why contaminated water is detrimental to human beings;

(Link to Specific Objective D7)

11.

distinguish between proper and improper sewage disposal practices;

 

 

12.

explain the impact of improper sewage disposal practices;

 

 

 

13. compare the treatment of sewage by biological filter and activated sludge methods;

Include the role of microorganisms in the treatment of sewage.

(Link to Specific Objective A2)

 

14.

relate the parts of a pit latrine to their functions;

 

Diagram required.
15.

explain why the siting of pit latrines is important;

 

Sandy soil, vicinity to water sources.

 

16.

Assess the use of pit latrines in the Caribbean;

 

Advantages, disadvantages, phasing out.

 

17.

evaluate the efficiency of the methods of domestic refuse disposal;

 

Analysis and interpretation of data.

18. describe the operations at a landfill; Include a description of a landfill.
19.

discuss the importance of landfills in the Caribbean;

 

Function of a landfill.
20.

evaluate the impact of solid waste on the environment;

 

Analysis and interpretation of data.
21.

analyze measures used to control solid waste volume;

 

reduce, reuse, recycle - examples of recyclable materials.
22. distinguish between the terms, 'biodegradable' and 'non-biodegradable';

Include classification of biodegradable and non-biodegradable items.

 

23. use tables charts and diagrams to represent data on the impact of health practices on the environment.  


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