Classify the following diseaes as infections or non-infectious.
a) AIDS , b) Tuberculosis, c) Chlorea, d) High blood pressure, e) Heart diseases, f) Pneumonia, g) Cancer.

Explanation

To classify the diseases as infectious or non-infectious, we need to analyze each disease based on whether they are caused by a transmissible agent (infectious) or not (non-infectious). Here’s the step-by-step classification:

### Step 1: Identify the diseases
The diseases to classify are:
a) AIDS
b) Tuberculosis
c) Cholera
d) High blood pressure
e) Heart diseases
f) Pneumonia
g) Cancer

### Step 2: Classify each disease
1. **AIDS**:
- **Classification**: Infectious
- **Reason**: Caused by the Human Immunodeficiency Virus (HIV) which is transmitted through body fluids.

2. **Tuberculosis**:
- **Classification**: Infectious
- **Reason**: Caused by the bacterium Mycobacterium tuberculosis, which spreads through the air when an infected person coughs or sneezes.

3. **Cholera**:
- **Classification**: Infectious
- **Reason**: Caused by the bacterium Vibrio cholerae, typically transmitted through contaminated food and water.

4. **High blood pressure**:
- **Classification**: Non-infectious
- **Reason**: It is related to lifestyle factors and does not involve a transmissible agent.

5. **Heart diseases**:
- **Classification**: Non-infectious
- **Reason**: Generally caused by genetic factors, lifestyle choices, and does not involve a transmissible agent.

6. **Pneumonia**:
- **Classification**: Infectious
- **Reason**: Caused by bacteria such as Streptococcus pneumoniae, which can be spread through respiratory droplets.

7. **Cancer**:
- **Classification**: Non-infectious
- **Reason**: It results from abnormal cell growth and is not caused by a transmissible agent.

### Step 3: Summary of classification
- **Infectious Diseases**:
- AIDS
- Tuberculosis
- Cholera
- Pneumonia

- **Non-infectious Diseases**:
- High blood pressure
- Heart diseases
- Cancer