Explanation

The troposphere is the atmospheric layer that contains most of the atmosphere's gases. 

Explanation

All viruses contain either DNA or RNA as their genetic material, and both are made of ribose or deoxyribose sugars.

So, ribose or its derivative is a common component in viruses.

Explanation

Explanation

Homeostasis is the set of metabolic reactions that maintain the internal environment of an organism, regulating factors.

Such as temperature, pH, blood sugar levels, and blood pressure.

Explanation

Fever is called a protective strategy because it helps the body fight infection.

When the body’s temperature rises, it slows down the growth of pathogens (bacteria and viruses) and stimulates the immune system to respond more effectively.

Explanation

Energy is measured in units of kilocalories

One kilocalorie  is equal to 4.18 kilojoules.

The amount of energy a food contains per gram is known as its energy density,

So we can describe fat as more energy-dense than protein or carbohydrate.

Explanation

• Carbon dioxide (CO2) is a major greenhouse gas.
• It responsible for about 65% of the Earth's greenhouse effect.

Explanation

Ophthalmologist means a specialist in the branch of medicine concerned with the study and treatment of disorders and diseases of the eye.

Ophthalmologist means ماہر امراض چشم

Explanation

Research consistently confirms that inhaled corticosteroids (ICS) increase the risk of pneumonia in patients with chronic obstructive pulmonary disease (COPD).

While ICS significantly reduce exacerbations and improve quality of life, clinicians must balance these benefits against a 1.5- to 2-fold increased risk of developing pneumonia.

Explanation

Montelukast is an oral leukotriene receptor antagonist used for maintenance therapy in asthma