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
spin [16.1K]
3 years ago
13

The fossil record shows life originated on Earth at least 3.5 billion years ago and consisted entirely of microorganisms. Paleon

tologists provide the strongest evidence of this conclusion through the discovery of:______.
Biology
1 answer:
klio [65]3 years ago
3 0

Answer:

stromatolites

Explanation:

Stromatolites or stromatoliths are layered mounds, columns, and sheet-like sedimentary rocks that were originally formed by the growth of layer upon layer of cyanobacteria, a single-celled photosynthesizing microbe. Fossilized stromatolites provide records of ancient life on Earth.

You might be interested in
Which is a method that uses bacteria to copy dna?
cluponka [151]
Recombinant DNA technology
6 0
3 years ago
Which of the following is true about natural selection? ​
Anna007 [38]

The options for this question are:

- Requires genetic variation

- Results in descent with modification

- Involves differential reproductive success

- All of the above

Answer:

<u><em>The correct option is d) All of the above</em></u>

Explanation:

The theory of natural selection explains that genetic variations occur in organisms of a species. Those organisms which are better adapted to live in an environment are able to survive and pass on their characteristics to their offsprings, hence descent with modification. Through this phenomenon, evolution takes place with the passage of time. Natural selection favours survival of the fittest. Hence, all of the above statements are true.

3 0
3 years ago
Vaccines can made from other parts of the virus such as
seraphim [82]

Answer:

Most attenuated vaccines are viral, some are bacterial in nature. Examples include the viral diseases yellow fever, measles, mumps, and rubella, and the bacterial disease typhoid

Explanation:

Hope this helps :)

3 0
3 years ago
The simplicity of prokaryotic cells prevents them from
nexus9112 [7]
No cells that no nucleus
7 0
3 years ago
Read 2 more answers
Tor F: Prescription drugs and over-the-counter drugs are the same thing
vovikov84 [41]

Answer:

False

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • What happens when a magnesium ion is attracted to a chlorine ion
    11·1 answer
  • Leslie is investigating which brand of cell phone has the longest lasting battery.
    13·1 answer
  • terriers are a breed of dog that tend to have tough, bristly fur that helps to protect them from the small rodents that they hun
    7·1 answer
  • Which choice best summarizes the outcome of Reid’s experiment
    15·1 answer
  • What is the proton gradient used for in photosynthesis?
    14·1 answer
  • What are the 4 types of physical Change?
    5·2 answers
  • What does it mean if a scientist fails to reject a hypothesis
    11·1 answer
  • Can I get some help please? Thanks!
    14·2 answers
  • Special chemicals that recognize and attach to germs are called what?
    11·2 answers
  • Millions of years ago, the ancestors of giraffes had short necks and used to eat leaves from the bushes on the ground. A genetic
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!