Several factors can weaken the immune system. These include a poor diet lacking vitamins and minerals, the development of resistant strains of pathogens, repeated infections, the use of immunosuppressant drugs, and HIV infection which destroys lymphocytes.

Break down complex topics into smaller, manageable chunks for easier recall.

Zambia

• loveness Phiri – 1084 pts

• Distance of A Straight Line
• Mid-point of A Line
• Equation of a Straight Line
• Parallel and Perpendicular Lines
• COMMUNICATION SYSTEMS