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
mina [271]
3 years ago
13

Which gas was most likely not present in creating the amino acids of early Earth's waters of the past?

Biology
2 answers:
denis-greek [22]3 years ago
5 0

Answer:

i think sulfur

Explanation:

alex41 [277]3 years ago
3 0

Answer: the answer is sulfur.

Explanation: I took the test

You might be interested in
How are homologous structures used to show evolution?
Valentin [98]

Hi again!

Homologous structures are similar structures in completely different animals, like bats and whales. We can use these to see how closely we evolved and how animals like whales evolved to become aquatic.

Hope this helps!

5 0
4 years ago
"some __________ neurons are specialized to detect stimuli, whereas __________ neurons send signals to the effectors of the nerv
White raven [17]
Some afferent neurons are sec specialized to detect stimuli, whereas efferent neurons send signals to the effectors of the nervous system.
3 0
3 years ago
If the moon is setting at midnight, what phase is it?
joja [24]

Answer:

the the climax of the night

8 0
3 years ago
Why is it necessary to give the hpv vaccine in multiple doses? the hpv vaccine contains poorly immunogenic antigenic fragments.
Kobotan [32]
<span>The answer to this question would be: the HPV vaccine does not replicate in the host
</span>
Administering a vaccine will induce the body immune cells to recognize it and produce a specific antibody for that antigen. The vaccine can be beneficial if the titer of the antibody is above a certain level. If the level of antibody is too low, the protection will be low too. Giving vaccine multiple time will increase the titer and increase the protection. HPV vaccine is safe because it won't replicate in the host so it can be administered multiple times.
6 0
3 years ago
____ behaviors rely on prior practice or experience?
Evgesh-ka [11]

Answer:

Learned behaviors

Explanation:

Learned behavior is where one develops from experience.

3 0
3 years ago
Other questions:
  • Which of the following is NOT true concerning the effects of pollutants on exercise?
    12·2 answers
  • Which characteristic is common to all prokaryotes and eukaryotes?
    12·2 answers
  • The processes of DNA replication and RNA transcription in E. coli are similar in some respects and different in others.
    11·1 answer
  • Glaciers pushing rocks against rocks is an example of
    9·2 answers
  • What two tissues are found within a vein
    15·2 answers
  • An example of ligand-gated ion channels is _____. An example of ligand-gated ion channels is _____. the spreading of action pote
    12·1 answer
  • During a solar eclipse, what celestial body would represent "B"?
    7·2 answers
  • Why do the large molecules need to break down?
    9·1 answer
  • 1. Define prokaryotic in your own words.
    8·2 answers
  • What are the relationship of living beings with environment​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!