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
Maurinko [17]
2 years ago
14

Northern lights or auroras can be seen within the _____ sub-layer.

Biology
2 answers:
zheka24 [161]2 years ago
5 0

Northern lights or auroras can be seen within the ionosphere sub-layer.

NeTakaya2 years ago
3 0
<span>The answer is Ionosphere. Northern lights or auroras can be seen within the Ionosphere sub-layer. The ionosphere is the layer of the Earth's atmosphere that contains a large amount of ions and free electrons, it is also able to reflect radio waves, it can also conduct electricity.</span>
You might be interested in
During a windstorm, a large old tree fell in the forest. As it came down, it trapped a young sapling about 5 meters tall underne
just olya [345]
During a windstorm, a large old tree fell in the forest. As it came down, it trapped a young sapling about 5 meters tall underneath it. The top of the 

Auxin and gibberellin in the sapling's stem will cause a gravitropic response in the sapling, and its stop will grow upward even though it is held down. 
5 0
3 years ago
Read 2 more answers
The ocean absorbs carbon dioxide directly from the atmosphere. How does CO2 absorption affect the ocean?
Rudiy27
Ocean plants absorb co2 just like trees do. Any co2 that’s not fixed will mess up the chemistry of the waters
4 0
3 years ago
Duck-billed platypus is called a bridge animal, why?​
xxMikexx [17]

Answer:

The platypus serves as a 'bridge' animal between nonmammals like birds and reptiles, which maintain their testicles in their body cavity, and placental and marsupial mammals, which hold their testes in an external scrotum."

4 0
2 years ago
The nitrogenous bases guanine and adenine are A. purines. B. a phosphate group. C. pyrimidines. D. a sugar group.
AleksAgata [21]

Answer:

The nitrogenous bases guanine and adenine are A. purines.

Explanation:

Adenine and guanine are purines, whereas the other two bases in DNA (thymine and cytosine) are pyrimidines.  The main difference between purines and pyrimidines is the number of rings that the base has: purines have two rings while pyrimidines only have one ring.  

In addition, phosphate group and sugar group cannot be the answer to this question because these two elements in addition to a nitrogenous base makes up a nucleotide.

Hope this helps!

5 0
2 years ago
The uniformity in the exact cells undergoing apoptosis makes C. elegans an excellent model organism for uncovering genes involve
Nataly [62]

Answer:

Over all growth and development cycle

Explanation:

<em>C. elegans,</em> due to its manageability, nervous system, muscle, skin gut and reproductive cycle makes it an ideal model. These nematodes are similar to human systems and lot of the research found can be applied to humans and medicine.

Apoptosis is the programmed cell death and this can be for many reasons such as repair, replace or removal of old or damaged cells. This groundbreaking research has captured the attention of scientist over the decades and many new findings are continuing to evolve.

Some phenotypes that are important in studying apoptosis are: Stress response, growth and development, tumor formation/regeneration and wound healing.

4 0
2 years ago
Other questions:
  • E. do the sd, cv, and beta produce the same risk ranking
    15·1 answer
  • Definition: This is an inanimate object that is not composed of cells. It may be made of atoms, molecules,
    12·1 answer
  • The generation of an electric current in a closed circuit by a changing magnetic field is 1) electromagnetism2) electromagnetic
    8·2 answers
  • Fossils of Thrinaxodon, a species that lived during the Triassic period, have been found in both South Africa and Antarctica. Th
    10·1 answer
  • If you were a conservation biologist in charge of the recovery plans for an endangered species, which would you prefer to find w
    5·1 answer
  • What is the area of the triangle?<br> 16<br> 10<br> 8
    11·1 answer
  • Realizează un text de maximum 10 rânduri , intitulat”Celula , unitatea de bază a tuturor organismelor”. Pentru aceasta: enumeră
    11·1 answer
  • Can somebody help me please
    11·2 answers
  • What should I do for my media presentation ‍‍‍‍
    14·1 answer
  • Fleas living on a dog are examples of what symbiotic relationship? .A .mutualism .B competition .C parasitism .D predator-prey
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!