Explanation

Friendly bacteria in our large intestine produce Vitamin K, which helps in blood clotting.

These bacteria mainly synthesize Vitamin K2, important for bone and heart health.

Explanation

Hammurabi was the sixth king of the First Babylonian Dynasty.

But is widely regarded as the first great king of Babylon due to his unification of Mesopotamia.

He is most famous for the Code of Hammurabi, one of the earliest written legal codes.

Explanation

Why has this jug been broken by you?

The structure for passive voice in present perfect tense: has/have + been + past participle.

The subject “you” becomes the agent, and “this jug” becomes the subject of the passive sentence.

Explanation

Leukocytes, or white blood cells, are key components of the immune system that defend the body against infections.

They identify, attack, and destroy harmful pathogens like bacteria and viruses.

Explanation

Dental amalgam is a mixture of liquid mercury in solid metal alloys like silver, tin, and copper.

It forms a solid solution once set, where the liquid (mercury) is dispersed in the solid.

Explanation

Checking prior knowledge helps the teacher connect the new lesson with what students already know.

It ensures that the foundation is strong before introducing new concepts.

Explanation

Explanation

Roman numeral LVI =

L = 50, V = 5, I = 1

So, 50 + 5 + 1 = 56.

Explanation

Polyisoprene is the synthetic version of natural rubber.

It has similar properties.

It is commonly used to make rubber products.

Explanation

Given that 3 women = 2 men in terms of work:

Work done by 15 men in 1 hour = 1 / (21 * 8)

Work done by 1 man in 1 hour = 1 / (15 * 21 * 8)

Work done by 1 woman in 1 hour = (2/3) * (1 / (15 * 21 * 8))

Work done by 21 women in 1 hour = 21 * (2/3) * (1 / (15 * 21 * 8))

= 14 / (15 * 21 * 8)

= 1 / (15 * 9 * 8) (simplified for 21 women working)

If 21 women work for 6 hours a day:

Work done by 21 women in 1 day = 6 * (1 / (15 * 9 * 8)) * (15 * 9)

= 6 / 8

To complete the work:

Number of days = 8 / 6 * 21

= 28

None of the given options directly match the calculation approach provided, but recalculating properly considering the work equivalence and hours:

15 men * 21 days * 8 hours = 2520 man-hours

Given 3 women = 2 men, 21 women = 14 men equivalent

Let x be the number of days for 21 women working 6 hours/day:

14 men * x days * 6 hours = 2520 man-hours

84x = 2520

x = 30