Home
Class 12
BIOLOGY
Deserts receive rainfall of less than 25...

Deserts receive rainfall of less than 25 cm annually. How much area
of land is desert?

A

About 10 to 15%

B

About 33%

C

About 15 to 20%

D

About 40%

Text Solution

AI Generated Solution

The correct Answer is:
To determine how much area of land is classified as desert, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Definition of Deserts**: Deserts are regions that receive less than 25 cm of rainfall annually. This low precipitation leads to arid conditions where only specific types of flora and fauna can survive. 2. **Identify the Global Coverage of Deserts**: Deserts are found on every continent and cover a significant portion of the Earth's land surface. 3. **Calculate the Percentage of Desert Area**: It is known that deserts cover about one-fifth of the Earth's land area. To convert this fraction into a percentage: - One-fifth can be expressed as 1/5. - To convert to a percentage, multiply by 100: \[ \frac{1}{5} \times 100 = 20\% \] 4. **Select the Closest Answer**: The options provided in the question are: - About 10-15% - About 33% - About 15-20% - About 40% Since we calculated that deserts cover about 20% of the land area, the closest option is "about 15-20%." 5. **Conclude the Answer**: Therefore, the area of land that is classified as desert is approximately 15-20%. ### Final Answer: The area of land that is desert is about 15-20%.
Promotional Banner

Similar Questions

Explore conceptually related problems

Aman’s income is 20% less than that of Anil. How much percent is Anil’s income more than Aman’s income?

How much -7 less than -1 ?

Four brothers splitting a sum of money between them. The first brother receives 50% of the total, the second receive 25% of the total, the third receives 20% of the total, and the fourth receives the remaining $4 . How much more does the first brother receive than the third brother?

The speed 5 ms^(-1) is less than 25 km h^(-1)

A load weighing 20,000 N is placed on a side with area 1000 "cm"^2 . How much pressure would it exert on the ground?

If x-y=-6, then y is how much greater than x?

A TV transmission tower of antenna is at a height of 20 m. How much service area can it cover if the receiving antenna is (i) at ground level (ii) at a height of 25 m ? Calculate the percentage increase in area covered in case (ii) relative to case (i).

A TV transmission tower of antenna is at a height of 20 m. How much service area can it cover if the receiving antenna is (i) at ground level (ii) at a height of 25 m ? Calculate the percentage increase in area covered in case (ii) relative to case (i). Radius of earth =6.4×106m

The rainfall on a certain day was 6cm. How many litres of water fell on 3 hectares of field on that day?

A TV transmitting antenna is 125 m tall. How much service area this transmitting antenna cover, if the receiving antenna is at the ground level? Radius of earth = 6400 km .