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forsale [732]
2 years ago
7

How do amphibians breathe on land and in water​

Biology
1 answer:
gizmo_the_mogwai [7]2 years ago
7 0

Answer:

Most amphibians can breathe both through cutaneous respiration (through their skin) and buccal pumping - though some also retain gills as adults. Some aquatic salamanders (and all tadpoles) have gills and can breathe underwater thanks to them. The Mexican axolotl, for example, never loses its gills.

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What can you say about the environments of these widely seperated layers
Alika [10]

Answer:

This means that the two separate rocks were once part of one piece of rock. These layers got separated most probably by continental drift as a result of tectonic plate movements. An example of such a fossil is the Mesosaurus, a freshwater crocodile-like reptile, that is found in Southern Africa and Eastern South America continents- that means they were once one land mass.

The environment in these two separate layers would most likely be different. As the layers drift apart from each other , they drift across latitudes that are determinants of climate in a region. Therefore, even the organisms in these two rock layers will evolve differently (even though they will share a common ancestor) in adaptation to respective environments – this is called allopatric speciation.

4 0
2 years ago
When a device is used in a circuit in which the voltage is 81 V, the current flowing through the device is 3 A. What is the resi
blondinia [14]

Answer:

The resistance of the device is 27Ω

Explanation:

When a device is used in a circuit in which the voltage is 81 V, the current flowing through the device is 3 A.

In order to calculate the resistance of the device, we know that the resistance is directly proportional to the voltage in the terminals of the device and the current flowing through it.

Using Ohm's law

R=\frac{V}{I} \\R=\frac{81V}{3A}=27Ω

8 0
3 years ago
Formal wear can be colourful. True or False<br>​
nikklg [1K]

Answer:

True

Explanation:

6 0
3 years ago
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What is a distinction that can be drawn between macroevolution and microevolution?
nikitadnepr [17]
<span>Microevolution refers to changes in the genetic pool of a species population. The changes in the genes (probably gene and allele frequencies) are observed over short time periods hence are small changes. This is in comparison to macroevolution that observes huge changes over longer time periods  in the population that warrant that the new populations is considered to be a new species</span>
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At the inferior end of the trachea is an internal ridge of mucosal covered cartilage that initiates a cough reflex when it is st
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The answer is Tracheal Carina
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