Home
Class 12
BIOLOGY
After about how many years of formation ...

After about how many years of formation of earth,life appeared on this planet?

A

500 billion years

B

50 million years

C

500 million years

D

50 billion years

Text Solution

AI Generated Solution

The correct Answer is:
To answer the question of how many years after the formation of Earth life appeared on this planet, we can follow these steps: ### Step 1: Understand the Formation of Earth - Earth formed approximately 4.5 billion years ago. This is the starting point for our timeline. ### Step 2: Conditions on Early Earth - Initially, the conditions on Earth were extremely harsh. There was no atmosphere, and the environment was too hot for life as we know it. ### Step 3: Formation of Atmosphere - Over time, the conditions began to change. An atmosphere started to form, which was essential for the development of life. ### Step 4: Timeline for the Appearance of Life - Life is believed to have appeared around 500 million years after the formation of Earth. ### Step 5: Calculate the Total Time - If we subtract 500 million years from the total age of Earth (4.5 billion years), we find that life began to appear approximately 4 billion years ago. ### Conclusion - Therefore, life appeared on Earth about **500 million years** after its formation. ---
Promotional Banner

Similar Questions

Explore conceptually related problems

The first cellular forms of life appeared on earth about

One metre how many light years

Before how many years dinosaurs suddenly disappeared from earth?

(a) Name the primates that lived about 15 million years ago. List their characteristic features. (b) (i) Where was the first man-like animal found? (ii) Write the order in which Neanderthals, Homo habilis and Homo erectus appeared on earth. State the brain capacity of each one of them. (iii) When did modern Homo sapiens appear on this planet?

Initially two radioactive nucleus have same no of active nucleus their half life are 3 years and 4 years respectively after how many years, number of nucleus of one of the radioactive element is half the number of active nucleus of other radioactive element.

Time gap in between formation of earth & origin of life :

Vipin is 42 years old and his son is 12 years old. After how many years will Vipin's age be twice that of his son?

How many teeth in man grows twice in life

Let a star be much brighter than our sun but its mass is same as that of sun If our earth has average lift span of man as 70 years In the earth like planet of this star system having double the distance from our star find the average lift span of a man on this planet in terms of our year .

Read the following statements regarding evolution (A-D)- A. Whales, bats, cheetah, and humans (all mammals) share similarities in the pattern of bones of forelimbs. B. The diversity of life forms on earth has been changing over millions of years. C. About 65 million years ago the dinosaurs suddenly disappeared from the earth. D. A single-step large mutation is called speciation and explained by Herbert Spencer. How many statements from the above is/are correct ?