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
timama [110]
3 years ago
10

The Triassic/Jurassic extinction paved the way for non-avian dinosaurs to become the dominant vertebrates for the rest of the Me

sozoic. However, there were many other vertebrates around at this time Which of these is a possible reason that non-avian dinosaurs were so successful?
a. The late Devonian extinction left many ecological niches open for non-avian dinosaurs to fill
b. Non-avian dinosaurs produce eggs with hard shells which provides protection against desiccation
c. Non-avian dinosaurs were al small and so didn' t require much vegetation to survive
d. The possession of feathers by both major clades of non-avian dinosaurs allowed them to survive the swings in temperature seen through the Mesozoic
e. The evolution of a bi-directional tidal breathing respiratory mechanism allowed them to outcompete other groups of vertebrates.
Biology
1 answer:
Tcecarenko [31]3 years ago
6 0

Answer:

d. The possession of feathers by both major clades of non-avian dinosaurs allowed them to survive the swings in temperature seen through the Mesozoic

Explanation:

The possession of feathers provided dinosaurs with a major advantage: mesothermy. This kind of metabolism is a transition form between cold- (ectothermy) and warm-blooded (endotherm), increasing their adaptation capabilities as the climate changed. The Mesozoic saw the breaking up of Pangaea first into two landmasses (Laurasia and Gondwana) and more individual landmasses towards the end.

<em>a. The late Devonian extinction left many ecological niches open for non-avian dinosaurs to fill.</em>

This cannot be the right answer since the Devonian extinction did not occur during the Mesozoic. The Permo-Triassic extinction did open many ecological niches, but these were exploited by all ornithodirans (meaning crocodiles, dinosaurs, and pterosaurs).

<em>b. Non-avian dinosaurs produce eggs with hard shells which provides protection against desiccation</em>

This is an advantage that relates to the success of amniotes (all vertebrates except for amphibians), and it played an important role in vertebrate evolution during the Late Devonian.

<em>c. Non-avian dinosaurs were al small and so didn' t require much vegetation to survive.</em>

Dinosaurs occupied several size scales, from very small to the most gigantic forms. Additionally, not all of them were herbivores. Although herbivory evolved independently in dinosaurs at least three times (Sauropodomorpha, Thyreophora, Neornithischia), the first dinosaurs were carnivores.

<em>e. The evolution of a bi-directional tidal breathing respiratory mechanism allowed them to outcompete other groups of vertebrates.</em>

This respiratory mechanism evolved at the beginnings of reptile evolution (as early as the Pensylvannian in the Carboniferous). It consists of having two influxes (exhalation and inhalation) of air into the lungs through the same channel. Fish, for instance, have an unidirectional breathing respiratory mechanism were the water enters through the mouth and leaves through the gills, were the oxygen is filtered. Dinosaurs already inherited this breathing mechanism.

You might be interested in
I will fan and medal !!!!!!!!!!!!!!
Sveta_85 [38]
All right.
Differences with the Historical Model:
1. That model shows the planet's orbits as perfect circles, not ellipses. 
<span>2. Aristotle believed in a geocentric (Earth centered) solar system, while it actually is heliocentric Sun centered). </span>
<span>3. That model didn't show all the planets we know today, such as Neptune, Uranus, etc. </span>
<span>4. A lot of that model was based on religious beliefs. 
</span>Differences with Modern Model:
1. Our model shows the orbits as ellipses. 
<span>2. Our model shows a heliocentric solar system. </span>
<span>3. Our model shows all the planets we know today. </span>
<span>4. Our model has nothing to do with religion. 
</span>Similarities Between Both Models:
1. They both are based on the same solar system. 
<span>2. They both show the inner planets, the Moon, the Sun, Jupiter, and Saturn. </span>
<span>3. The both were made by many observations of the sky.
</span>
Hope this helps.:b

8 0
3 years ago
Which of these nutrients cah be found in all organic compounds?
MatroZZZ [7]

Answer:

its carbon

Explanation:

hpe this helped :}

7 0
2 years ago
Read 2 more answers
Why are unused embryos available? How could they be used in medical research?
coldgirl [10]

Answer:

Why are embryos used in medical research?

Stem cells can be obtained at the early stages of embryo development; these cells are called human embryonic stem cells (hESC). They also could be used in research to develop drugs to treat serious diseases, or to repair organs following a stroke or heart attack.

6 0
3 years ago
What is the fastest way to administer nicotine to the brain?
Agata [3.3K]

Answer:

d. Smoking

Explanation:

Nicotine is a chemical found in many plants such as tobacco. It is one of the 4000 chemicals that tobacco presents and the main component that acts in the brain.

This chemical is absorbed through the skin and lining of the mucosa of the nose and mouth, or in the lungs by prior inhalation. Nicotine can quickly reach the bloodstream and brain and reach maximum levels. The action of smoking cigarettes causes nicotine to reach the brain in just 10 seconds after inhalation. Although the acute effects dissipate in a few minutes, they cause the need to continue the intake of the substance (addiction)

5 0
3 years ago
Why can an HIV infection not be treated by antibiotics?​
Katyanochek1 [597]

Answer:

because HIV is a virus and antibiotics treat bacterial infections.

Explanation:

please give me brainliest

7 0
3 years ago
Read 2 more answers
Other questions:
  • Down syndrome is an example of __________.
    6·1 answer
  • The nurse is planning interventions for a patient experiencing pain. for what type of synergistic relationship should the nurse
    9·1 answer
  • Please let me know as soon as possible
    7·1 answer
  • Water is drawn upward from the roots through plant tissue to the leaves by ________.
    13·2 answers
  • Based on the organization of living things, tissues
    8·1 answer
  • Proteins help the body build new tissue, repair damage cells, and produce energy.
    15·1 answer
  • Which step occurs next after extraction in the mineral resource cycle?
    6·2 answers
  • What are possible symptoms of the measles virus?
    9·2 answers
  • A protein molecule that acts as a catalyst in living organisms is called a(n) _____.<br> catalyst
    15·2 answers
  • PLEASE HELP!
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!