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Vaselesa [24]
3 years ago
9

A small river forms, dividing a group of moles into two isolated populations. After many years, biologist puts moles from opposi

te sides of the river together and finds that they will not mate. What type of speciation is it?
Biology
1 answer:
Oduvanchick [21]3 years ago
5 0

Answer:

Allopatric speciation

Explanation:

Allopatric speciation is a type of speciation that takes place when a group of species are divided into two different groups which are separated from each another. In allopatric speciation, a geographic barrier such as a water body (river) or a mountain range forms and prevents the species from mating with each other. As the species are separated into two groups, each of them develops its own distinct traits based on the demands of their unique environment or the inherited traits of the group that are passed on to offspring.

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In how many ways can nine members of committee sit at the round table so that secretary and the joint secretary are always the n
MaRussiya [10]

Answer:

1440

Explanation:

Members except president, secretary and joint secretary = 9−3=6

Their arrangement = 6!

No. of arrangements of secretary and joint secretary at wto places

=2!=2

Total arrangement =2×6!

2 x 6! = 1440

7 0
3 years ago
Read 2 more answers
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lisabon 2012 [21]

Answer:

1) A 2) C?

Explanation:

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3 years ago
Which of the following would NOT diffuse through the plasma membrane by means of simple diffusion?
yanalaym [24]
Glucose

Glucose, a small polar solute, uses a membrane transporter (a protein carrier) to cross the plasma membrane via facilitated diffusion. In simple diffusion, small nonpolar and lipid-soluble substances (including gases) diffuse directly through the lipid bilayer.
8 0
3 years ago
An asynchronous clr' signal (multiple answers can be correct, select all that apply. you will get partial credit in case of miss
stiv31 [10]

Correct Question:

An asynchronous counter signal:

Answer:

overrides the clock-gated input signal(s).

Explanation:

An asynchronous counter signal normally overrides the clock-gated input signal(s).

An asynchronous counter is a type of counter whereby each flip-flop output serves as the clock input signal for the next flip-flop signals and preset can be used to override the clock-gated input signal(s).

7 0
4 years ago
The serous fluid within the pericardial cavity works to:____.
Feliz [49]

The serous fluid within the pericardial cavity works to lubricate the membranes of the serous pericardium. It is the space between the layers of the pericardium.

<h3>What is the pericardial cavity?</h3>

The pericardial cavity refers to the space between different layers of the pericardium in the heart.

The pericardium is one of the three tissues that form the heart (i.e., pericardium, myocardium, and endocardium).

The pericardial cavity is composed of a serous fluid capable of reducing surface tension and lubricating this layer.

Learn more about the  pericardial cavity here:

brainly.com/question/2833911

6 0
2 years ago
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