Explanation

The Control Unit (CU) manages and decodes instructions from programs so the CPU knows what actions to perform.

It also directs the flow of data between the CPU, memory, and other components.

Explanation

Every processor must have a Control Unit (CU) to direct operations and an Arithmetic Logic Unit (ALU) to perform calculations.

Primary storage (RAM) is essential for holding data and instructions during processing.

Explanation

Explanation

• Rabbits feed on seeds and leaves, which are plant materials, making them herbivores.
• Herbivores are animals that primarily consume plants and plant products, such as leaves, stems, roots, flowers, fruits, and seeds.

Explanation

Explanation

Lightning provides the high energy needed to break the strong bonds of nitrogen (N₂) in the atmosphere.

This allows nitrogen to combine with oxygen, forming nitrites and nitrates that plants can absorb.

Explanation

Vaccination introduces weakened or inactive germs (antigens) into the body.

In response, the immune system produces antibodies to recognize and fight future infections.

Explanation

The septum is the muscular wall that separates the right and left sides of the human heart.

It prevents the mixing of oxygenated and deoxygenated blood between the two sides.

Explanation

• Unicellular organisms, like Amoeba and Paramecium, are composed of only one cell.
• Plants (fern and coconut) and animals (hydra and eagle) are composed of many cells, making them multicellular organisms.

Explanation

• Microscopes are used to magnify and observe tiny objects.
• Such as microorganisms, cells, and tiny structures.
• That are not visible to the naked eye.