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
baherus [9]
2 years ago
12

3. What are some scientific explanations for the history of life on Earth?

Biology
1 answer:
KATRIN_1 [288]2 years ago
7 0

Answer:

Many scientists favor the RNA world hypothesis, in which RNA, not DNA, was the first genetic molecule of life on Earth. Other ideas include the pre-RNA world hypothesis and the metabolism-first hypothesis. Organic compounds could have been delivered to early Earth by meteorites and other celestial objects

You might be interested in
Rainforests around the world are being cleared at an alarming rate to make room for new communities, agriculture, mining, and ro
storchak [24]
I think it’s a I’m prob wrong tho
8 0
3 years ago
Read 2 more answers
1. What does "semiconservative replication" mean?
mario62 [17]

Answer:

<h2><em><u>The</u></em><em><u> </u></em><em><u>answe</u></em><em><u>r</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>question</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>B</u></em><em><u>.</u></em></h2>
6 0
3 years ago
Which factor is most likely to cause a faster rate of blood flow
Alekssandra [29.7K]

Answer:

Exercising

Explanation:

This happens because, when you exercise, the blood vessels in your muscles dilate (vasodilation) and as a consequence, the rate of blood flow is faster. The increased blood flow delivers more oxygenated blood to the working muscle.

4 0
2 years ago
Domain is a newer portion of the classification system that includes Eukarya and Prokarya. What information most likely dictated
olga2289 [7]

New data about evolutionary relationship between organisms

Explanation:

New data about the evolutionary relationship between organisms most likely dictated that the domain level is adopted.

  • Evolutionary trends and morphological relationship between organisms became very important in the classification system.

Organisms are classified into the domain levels as:

  1. Archaea,
  2. Bacteria,
  3. Eukarya

This classification is based on the sequences of nucleotides in the cell.

Learn more:

Domain brainly.com/question/7172507

#learnwithBrainly

8 0
2 years ago
Read 2 more answers
Which of the following will be expected to be activated during times of prolonged starvation? (select all correct answers)
Scilla [17]

Answer:

Option A

Option D

Option F

Explanation:

During the process of continuous starvation for a long period of time, the primary source of energy in body is hepatic gluconeogenesis which is responsible for producing endogenous glucose. Also lipolysis takes place in the adipose tissue to release fatty acid which is then converted into ketone bodies through though mitochondrial β oxidation and ketogenesis. The liver communicates with extrahepatic tissues, including adipose tissue and skeletal muscle and deliver glucose and ketone bodies to muscle and other extrahepatic tissues as fuels.  

Hence, option A, D and F are true.

5 0
3 years ago
Other questions:
  • Organisms belonging to the same _____ would be the most closely related.
    9·1 answer
  • What logical scientific inference can be drawn from the observation that many different species have homologous structures?
    12·1 answer
  • Which reaction best explains why carbon is able to from macromolecules ?
    8·1 answer
  • Hairs that clean dirt out of the air in your nasal passages are called:
    5·2 answers
  • Why is it important to maintain accuracy during dna replication?
    14·1 answer
  • what serves as a standard of comparison to evaluate the effect of the independent variable on the dependent variable
    13·1 answer
  • Etapas del desarrollo fetal.​
    12·1 answer
  • Where on the brain is the Parietal lobe located?
    5·1 answer
  • Select from the drop-down menu to correctly complete the statement.
    6·2 answers
  • What is the remaining ratio of alleles? 2. Have any alleles been selected against?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!