Explanation

Green plants make their own food through photosynthesis, so they are called producers.

They form the base of the food chain in any ecosystem.

Explanation

Explanation

Explanation

Explanation

"Pakistan's polio immunization campaign began in 1974, but eradication efforts officially started in 1994.

The country had the most polio cases worldwide in 2014."

Explanation

The sternum helps protect the internal thoracic viscera – such as :

• the heart
• lungs
• esophagus.

The sternum (or breastbone) is a flat bone located at the anterior aspect of the thorax.

It lies in the midline of the chest and has a 'T' shape.

As part of the bony thoracic wall,

Explanation

A sphygmomanometer is used to measure blood pressure and is typically applied to the upper arm.

The cuff inflates around the arm to measure systolic and diastolic blood pressure levels.

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

Polio primarily affects the nervous system and can cause muscle weakness or paralysis.

It often targets children and may lead to permanent disability.

Explanation

A sphygmomanometer measures blood pressure in the brachial artery, which is the main artery that supplies blood to the muscles in the upper arm and elbow.