Explanation

The periodic table, also known as the periodic table of elements, is an organized arrangement of chemical elements into rows (periods) and columns (groups).

The periodic table shows trends in element properties, such as:

• Metallic character: Increases down a group and from right to left across a period.
• Nonmetallic character: Increases from the bottom left to the top right of the table.

Explanation

Email, or electronic mail, is a way to send messages from one or more users to one or more recipients using the internet:

• Text, pictures, and files: You can send text, pictures, and files to one or more people.
• Notifications and reminders: You can send emails to notify or remind people.
• Marketing: Companies can use email to market their products and remind customers to make a purchase.

Explanation

In Microsoft Excel, B2:B6 represents a range of cells.

In Excel, letters and numbers are used as row and column headings to refer to cells.

For example, B2 refers to the cell at the intersection of column B and row 2.

Explanation

The carbon compound which forms the endoskeleton and exoskeleton of animals is calcium carbonate.

Seashells are the exoskeletons of mollusks such as snails, clams oysters and many others.

Such shells have three distinct layers.

They are composed mostly of calcium carbonate with only a small quantity of protein--no more than 2 percent.

Explanation

Explanation

Apple is the world's largest hardware company by market capitalization.

It's also the world's largest tech company. 

Explanation

Books reading in childhood was very interesting.

بچپن میں کتابیں پڑھنا بہت دلچسپ تھا۔

The gerund "Reading" fits the sentence structure.

It indicating the action of reading books in childhood.

It maintains grammatical accuracy and conveys the intended meaning of the sentence.

Explanation

Explanation

Slide transitions can be applied to the current slide, previous slide, or new slide.

Transitions can be set to occur when entering or exiting any of these slides.

Explanation

Total heads = 200

Total legs = 580

Calculation:

Let, number of pigeons be x and number of rabbits be y

According to the question,

x + y = 200     ...i)

2x + 4y = 580

⇒ x + 2y = 290     ...ii)

From (i) and (ii) we get,

y = 90

⇒ x = 200 – 90 = 110

∴ There are 110 pigeons in the zoo