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
Alex Ar [27]
3 years ago
13

Study the timeline.

Biology
1 answer:
Digiron [165]3 years ago
5 0

Answer:

The correct answer is - 4.1 billion years ago.

Explanation:

In the question, there is a timeline given based on the fossils evidence and on the base of this timeline, it is given that the earth formed around 4.5 Billion years ago. Soon after the earliest water, the first living unicellular single-celled organism found which is dated around 4.1 billion years ago.

It has appeared soon after the earth formed itself and after a billion years later the first photosynthetic organism occurred.

You might be interested in
Identify the structures a virus can contain.
Gemiola [76]

Answer:

The simplest virions consist of two basic components: nucleic acid (single- or double-stranded RNA or DNA) and a protein coat, the capsid, which functions as a shell to protect the viral genome from nucleases and which during infection attaches the virion to specific receptors exposed on the prospective host cell.

6 0
3 years ago
Read 2 more answers
What you observe when examining the onion root tip using the low-power lens
bezimeni [28]

Explanation:

Low power objective shows more field of view but does not give appreciable details about the view.

  • In the root tip of onions, the cell walls are distinctly visible and they are arranged in a rectangular mosaic pattern.
  • The nucleus stands out appreciably and it is tiny.
  • The cytoplasm is also visible.
  • Root cells do not have chloroplast since they do not take part in photosynthesis.

Learn more:

Onion cell brainly.com/question/2855039

#learnwithBrainly

4 0
3 years ago
Which of the following is NOT a characteristic of animals?
coldgirl [10]
Hmm, learning about this what a while back, but i would say (1)
4 0
3 years ago
Read 2 more answers
In the 1990s, fat-free foods became popular among people trying to lose weight. However, many dieticians now conclude that the f
mars1129 [50]

Answer:

More processed ingredients

Explanation:

if it's fat free, you have to have a supliment for it.

8 0
3 years ago
Pineapple monocot or dicot
Ira Lisetskai [31]

the answer is pineapple

6 0
3 years ago
Read 2 more answers
Other questions:
  • The main energy resource used by industrialized countries is
    7·1 answer
  • For each of the following scenarios, state the type of inheritance (20 points) and explain how you are able to discern this info
    9·1 answer
  • Which of the following is an example of a homozygous dominant allele? wr Rr RR Rw
    9·2 answers
  • Which of the following is NOT TRUE of animals that have open circulatory systems?
    13·1 answer
  • Which of the following statements is/are accurate?
    11·1 answer
  • Which describes the process of fermentation?
    11·1 answer
  • What is the molar mass of Fe(CH2O2)3?
    13·2 answers
  • -. What are the 6 phases of The Cell Cycle?
    15·1 answer
  • How does mutation produce genetic variation?
    10·1 answer
  • A measuring cylinder contains 40 cm3 of water. When a stone of mass 69 g is dropped into the water, the stone sinks and the wate
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!