Explanation

During sleep, a man's blood pressure typically decreases or "dips" compared to daytime levels, following the natural circadian rhythm. 

Explanation

The idiom means accepting a task that is too difficult or too much to handle.

It suggests overestimating one's ability or time.

Explanation

⇒ Number of girls = 20

⇒ Number of boys = 15

The ratio of girls to boys: ⇒ Girls: Boys = 20:15

⇒ Girls: Boys = 20 ÷ 5: 15 ÷ 5 ⇒ Girls: Boys = 4:3

Explanation

Explanation

 Anaerobic Organisms: Anaerobic organisms, including certain bacteria, are those that do not require oxygen for growth and survival. 

Oxygen Toxicity: Some anaerobic bacteria are highly sensitive to oxygen and cannot tolerate its presence, while others can tolerate small amounts of oxygen. 

Explanation

“European” starts with a vowel letter but a /juː/ sound, so “a” is correct

Explanation

Ibn-al-Arabi propounded the Sufi philosophy of wahdat-ul-wujud 

Wahdat-ul-Wujud means onceness of being.

He was one of the greatest Muslim philosophers. 

Explanation

Satellite

سیٹلائٹ

Explanation

If a constant is added to each value, the mean increases by that constant.

New mean = 6 + 3 = 9.

Explanation

 The unit "poise" (symbolized as P) is a CGS (centimeter-gram-second) unit of dynamic viscosity,

It also known as absolute viscosity, named after French physician Jean Louis Marie Poiseuille.