1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
tia_tia [17]
3 years ago
14

Based on fossil evidence, about how long ago did the first

Biology
2 answers:
bixtya [17]3 years ago
7 0

Answer:

The correct answer will be option-4.1 billion years ago.

Explanation:

Earth the only planet in the universe which harbors life was formed around 4.5 billion years ago.  

Organic molecules formed from the inorganic molecules started aggregating and formed the first single-celled organisms which were microscopic. The fossil evidence found in the deep rocks and hydrothermal vents in the ocean suggests that single-celled organisms were formed around 3.5-4.2 billion years ago.

Thus, option-4.1 billion years ago is the correct answer.

garik1379 [7]3 years ago
3 0
Around 4.1 billion years ago the first single celled organism appeared
You might be interested in
Scientists are sure that having 2 heads is only caused by a genetic<br> mutation.<br> true<br> false
azamat

Answer:

I think It's true

Explanation:

7 0
3 years ago
║PLEASE ANSWER ASAP! WILL GIVE BRAINLIEST!║
jok3333 [9.3K]

Answer:

For specification to occur, two new populations must be formed from one original population, and they must evolve in such a way that it becomes impossible for individuals from the two new populations to interbreed.

idk if this helps but i tried lol and no need for brainliest

3 0
3 years ago
What is a primary function of the active site of an enzyme?
mote1985 [20]
The active site’s primary function is to bind with the substrate molecule to undergo a chemical reaction.
6 0
3 years ago
WHICH OF THE FOLLOWING CONTAINS A CARBOXYL AND AN AMINO GROUP?
xz_007 [3.2K]

Answer:

idk

Explanation:

e

7 0
3 years ago
Read 2 more answers
Why are All Cells Not The Same ?
kaheart [24]
Cells have different uses and functions. There must be differentiation/diversity between cells to form a functional organism.
4 0
3 years ago
Other questions:
  • PLZ HALP SOOOON! THIS IS RELY IMPORTANT &amp; DUE @ 12:00 PM TODAY!!!!
    7·1 answer
  • Mia conducted a five hour experiment. She used a liquid solution. The solution decreased by 9/8 ounces every hour for 5 hours. A
    7·1 answer
  • TEN MEDAL QUESTION
    7·1 answer
  • What is the maximum number of atoms that a hydrogen atom can bond with in an organic compound?
    7·1 answer
  • PLEASE ANSWER!!!!
    11·1 answer
  • Cooking improves the taste of food and makes it easy to digest . Are any nutrients lost .Explain
    8·1 answer
  • Scientific theories _____.
    12·1 answer
  • Which of the following is a CORRECT pairing of the RNA type and the description?
    6·1 answer
  • Pretty easy question (s) but I am not good at explaining things so I need help
    10·1 answer
  • If you push something out of someone’s hands, which law of motion is it?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!