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
Deffense [45]
3 years ago
13

What system includes oxygen, nitrogen, and ozone?

Biology
2 answers:
Fiesta28 [93]3 years ago
6 0
The atmosphere. All of these elements can be found in the air, which is a part of the atmosphere.
Nikolay [14]3 years ago
3 0
The system that includes oxygen, nitrogen, and ozone is the atmosphere.
You might be interested in
Which hypothesis helps to explain why all organisms share the same genetic code?
KonstantinChe [14]

Answer:

There are two possible answers: Deep-sea vents provided the energy needed for the first organic compounds to form OR self-replicating RNA molecules passed on genetic information.

Explanation:

The reason for the first answer is due to the hypothesis that indicates that life (organic molecules) arose from inorganic molecules synthesized from the amino acids in those energy vents. This is called the metabolism first hypothesis. The Miller-Urey Experiment provided evidence that organisms could rise from inorganic molecules (they simulated under the conditions you would see on early Earth). The second hypothesis is the RNA World hypothesis (second answer) which suggests that the formation of RNA that could replicate (possible due to mutation or evolution), led to life that could preserve its genetic integrity through replication (greater stability to the organism) and create lipid bi-layer membranes/other organelles. Some scientists support the Metabolism First Hypothesis, while others are skeptical (this goes for the RNA World Hypothesis as well). However, the RNA World Hypothesis is for more reasonable in the fact that its main point is the fact that RNA molecules were able to replicate and maintain genetic stability despite early Earth conditions. Although either hypothesis could explain why all organisms share the same genetic code, the RNA World Hypothesis better explains the universality of DNA/RNA of genes that we see today.

5 0
2 years ago
Read 2 more answers
what is the independent variable , dependent variable , and the control please help i’ll give you a high five
muminat

Answer: i would say the independent variable is the soil and the control variable is the seed because it stays the same in all of them to better understand the experiment while the dependent variable is the fertilizer.

Explanation: i am not completely sure but maybe someone else can also answer to verify it first

8 0
3 years ago
Why do populations have variation of certain traits
HACTEHA [7]
To know where it rightfully belongs to. Variation of certain traits is caused by multiple factors of an individual of the same kind. Depending on their physical appearance, their environment and nature of survival.

Hope this might help.
3 0
3 years ago
Read 3 more answers
reverse transcriptase is an enzyme found in association with retroviral activity. it has the property of ________.
Veronika [31]

Answer: synthesis of DNA from an RNA template

6 0
2 years ago
The muscles of the stomach aid in _____ digestion
tatuchka [14]
As food reaches the end of the esophagus, it enters the stomach through a muscular valve called the lower esophageal sphincter. The stomach secretes acid and enzymes that digest food. Ridges of muscle tissue called rugae line the stomach. The stomach muscles contract periodically, churning food to enhance digestion.Mar 4, 2016
6 0
3 years ago
Other questions:
  • If it takes 500 seconds for the light from the Sun to reach
    14·1 answer
  • Drag the tiles to the correct boxes to complete the pairs.
    15·1 answer
  • Which kind of organism is found at the end of a food chain?
    5·2 answers
  • Which of the following statements does not highlight a difference in eukaryotic and prokaryotic translation?
    10·1 answer
  • Which characteristic cannot be inherited
    11·2 answers
  • What is algor mortis?
    8·2 answers
  • Which is the main function of fruit
    12·1 answer
  • What happens to water when it freezes?
    6·2 answers
  • Platelets helps us in fighting against diseases. ______.
    14·1 answer
  • Definition of “principle of dominance”
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!