Explanation

In modern versions of MS Word, you open the Header and Footer by clicking the "Insert" tab, then choosing "Header" or "Footer."

This allows you to edit and customize content at the top or bottom of every page.

Explanation

The processor (CPU) performs calculations and logical operations to convert raw data into meaningful information.

It is the central unit of the computer that executes instructions and controls other components.

Explanation

Explanation

The Operating System (OS) acts as a bridge between the user and hardware, managing all software and hardware resources.

It is called a Resource Manager because it handles CPU, memory, input/output, and file system efficiently.

Explanation

Windows is an operating system developed by Microsoft Corporation.

It is widely used on personal computers.

It offers a graphical user interface (GUI).

Explanation

Pesticides are chemicals used to kill or repel insects that damage plants and crops.

They help protect agricultural yield by controlling pest populations.

Explanation

Antibodies are proteins produced by the immune system to neutralize or destroy antigens (disease-causing agents).

They are a key part of the body’s defense mechanism against pathogens like bacteria and viruses.

Explanation

Explanation

Frogs can breathe through their skin, lungs, and lining of the mouth, especially in water where cutaneous respiration is key.

This ability helps them absorb oxygen directly from their environment.

Earthworms and amphibians, such as frogs, breathe through their skin. 

Explanation

Tuberculosis (TB) is a bacterial infection caused by Mycobacterium tuberculosis, and its symptoms include:

• Fever
• Chest pain
• Coughing up blood or phlegm
• Sweating at night
• Fatigue
• Weight loss (not weight gain)