Explanation

Christopher Columbus first "discovered" the Americas on October 12, 1492

He was an Italian explorer and navigator from the Republic of Genoa

Completed four Spanish-based voyages across the Atlantic Ocean

Explanation

• Sunlight is a good source of vitamin D.
• When our skin is exposed to sunlight, it produces vitamin D, 
• It is essential for bone health, immune function, and the regulation of calcium levels in the blood.
• Deficiency of Vitamin D results in Rickets.

Explanation

The Yangtze River is the longest river in Asia.

It is the third longest in the world.

It is length over 6,300 kilometers (4,000 miles) long.

It is originates in the highlands of Tibet.

It is flows into the East China Sea at Shanghai, the world's busiest port.

It is considered the heart of China.

Additional information:

Yellow River: The second longest river in Asia.

It is located in China

Mekong: A river that flows through China, Myanmar, Laos, Thailand, Cambodia, and Vietnam

Explanation

A compound sentence contains two independent clauses connected by a coordinating conjunction (e.g., and, but, or).

Example: I like tea, but she prefers coffee.

Explanation

Indonesia is known as a volcano-rich country

Indonesia has a great number of volcanoes in the world

Indonesia has around 130 active volcanoes

In Indonesia, more than 70% of the population live within 100km of one or more of the country's 130 active volcanoes

Indonesia is located on the Pacific Ring of Fire

while 

Mauna Loa is still the largest ACTIVE volcano on Earth

Explanation

(18×3)+(45/5​)=54+9=63

Explanation

 To avoid repetition of words, it’s useful to use synonyms to vary language while maintaining clarity and meaning

Explanation

To avoid plagiarism, it's important to properly cite sources to give credit to the original authors and avoid misrepresentation of others' work. 

Explanation

Step 1: Assume original price = 100

(This makes percentage calculations easy)

Step 2: Increase by 20%

Step 3: Apply 25% discount on new price

Step 4: Find net change

Original price = 100
Final price = 90

Change = 90 − 100 = −10

Step 5: Percentage change

Explanation

 The term "Iron Curtain" primarily referred to the division between West Germany and East Germany

During the Cold War, the Iron Curtain was a political metaphor

Used to describe the political and physical boundary dividing Europe into two separate areas from the end of World War II in 1945 until the end of the Cold War in 1991