Explanation

CTRL + H opens the "Find and Replace" dialog box.

It allows you to replace text or specific formatting in MS Word 2007.

CTRL + I: Italicizes selected text.

CTRL + T: Creates a hanging indent.

Explanation

"By" means next to or beside someone.

So, "My sister sat by my mom in the bus" is the correct sentence.

Explanation

To have your hands full is an English idiom.

To have your hands full means have as much work as one can do.

To have your hands full means  بہت مصروف ہونا

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Explanation

ATP (Adenosine Triphosphate) is called the energy currency of the cell because it stores and provides energy for cellular activities.

It releases energy when converted to ADP (Adenosine Diphosphate), which is then recycled back into ATP through cellular respiration.

Explanation

Dexterity means مہارت

Skill means مہارت

Explanation

• Light travels in a straight line.
• It is also known as a rectilinear path.
• It in a homogeneous medium like air or vacuum.

Explanation

The motherboard is the central printed circuit board in a computer that serves as the foundation for all other hardware components.

All other devices, including the CPU, RAM, hard drives, and peripherals, connect directly or indirectly to the motherboard. 

Explanation

Then, Ahmed's age after 15 years $=(x+15)$ years.
Ahmed age of 5 years back $=(x-5)$ years.
Given, $(x+15)=5(x-5)$
$x+15=5x-25$
$5x-x=15+25$
$4x=40$

Explanation

Light is a form of energy.

Light is actually energy made of small particles called photons.

Explanation

The renewable energy sources are:

• Water energy
• Wind energy
• Tidal energy
• Hydroelectric
• Ocean energy
• Geothermal energy
• Biomass
• Biogas

The non-renewable energy sources are:

• Fossil fuels or Hydrocarbon fuel (Oil, Natural gas, Coal)
• Nuclear energy