Explanation

The energy extracted from the vaporised liquid as evaporation occurs will decrease the temperature of the liquid, resulting in a process known as evaporative cooling.

Explanation

Head is the change in water levels between the hydro intake and the hydro discharge point.

It is a vertical height measured in metres.

Explanation

The third edition of the popular Structural and Stress Analysis provides the reader with a comprehensive introduction to all types of structural and stress analysis.

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Explanation

The center of gravity of an object is where we can consider all of the weight of the object to be concentrated.

This is a useful concept in physics and engineering.

Explanation

THRIFTY کنجوس. کفایت شعار

Explanation

EXTRAVAGANCE means اسراف، فضول یا ضائع

 Waste means ضائع 

Explanation

The 17 Goals were adopted by all UN Member States in 2015, as part of the 2030 Agenda for Sustainable Development which set out a 15-year plan to achieve the Goals.

Explanation

Water conservation is the practice of using water efficiently to reduce waste and preserve this precious resource.

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Explanation

Concrete drying is a continuous and fluid event, and usually reaches its full effective strength after about 28 days.