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katrin [286]
3 years ago
7

How could physical barriers, such as a river or rift, lead to allopatric speciation

Biology
1 answer:
alexdok [17]3 years ago
8 0

Answer:

This barrier prevents the individuals on one side from reproducing with the individuals on the other.

Explanation:

Hope this helps

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3. How many limbs do organisms in the order Gymnophiona have? 1: two 2: multiple pairs 3 : none​
vivado [14]

the organisms in the order Gymnophiona have no limbs. Option 3

<h3>What is Gymnophiona ?</h3>

Gymnophiona also  called Apoda, area known as one of the three major  orders of the class Amphibia.

Its members are known as caecilians which means “sightless” or “blind.”

Majority of the organisms in this group are limbless and wormlike amphibians that live underground in humid tropical regions throughout the world.

They are believed to have internal fertilization.

Their heads are blunt, and their skulls are bony and compact in nature.

Since they are limbless, they have no limbs

Thus, the organisms in the order Gymnophiona have no limbs. Option 3

Learn more about amphibians here:

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5 0
2 years ago
Expiratory reserve volume (ERV) You ask your lab partner to inspire a normal tidal inspiration, and breathe out a normal tidal e
Bumek [7]

The average expiratory reserve volume or ERV is 810.

<h3>What is expiratory reserve volume?</h3>
  • Expiratory reserve volume or ERV is the amount of air that is exhaled forcibly.
  • This can be measured using a spirometer and is used to detect restrictive lung diseases.
  • It is the maximum amount of air that can be exhaled after normal tidal volume is exhaled.
  • Respiratory volume is the volume of air which is either inhaled, exhaled or stored in your lungs.
  • The doctors estimate the reserve volume with the help of spirometer to determine some lung diseases.
  • Once diagnosed with a lung disease, spirometry is used to monitor it.
  • Here, 3 readings of ERV are taken, calculate the sum of the these and divide by 3 to calculate the average ERV.
  • ERV= (800+ 850+ 780)/ 3= 810

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7 0
2 years ago
What short-term outcome would underage drinkers most likely to experience
adell [148]

Under development of the brain.

8 0
3 years ago
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Hemophilia A is an X-linked blood clotting disorder. A normal man and a woman with hemophilia A have a child with Turner Syndrom
SSSSS [86.1K]

Answer: e.Woman; there is not enough information to tell if the nondisjunction happened in meiosis I or II.

Explanation: There is not enough information to tell if the nondisjunction happened in meiosis I or II. Nondisjunction can occur during meiosis I and meiosis II, resulting in abnormal chromosomes number of gametes. The important difference between nondisjunction in meiosis 1 and Ii is that during meiosis 1, homologous chromosomes fail to separate while in meiosis II, sister chromatids fail to separate meaning it could have happened in meiosis I or II but we were not given.

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3 years ago
The physician did a visual examination of the vagina and cervix to note changes in the cells and capillary network. the procedur
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The procedure that takes place with the examination procedure is the colposcopy. This is the examination used in having examine the cervix and vagina of a female individual in means of having to identify if there is any presence of disease.

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