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kaheart [24]
3 years ago
14

Populations of coastal lodgepole pine are separated along an environmental gradient of soil pH that changes from neutral pH near

the shoreline to extremely acidic pH approximately 8 km away from the shore. Populations of lodgepole pine inhabiting the ends of this environmental gradient (i.e. neutral pH versus extremely acidic pH soils) have diverged in a number of phenotypic characters, as well as cannot interbreed. What model of speciation is this pattern consistent with?
Biology
1 answer:
77julia77 [94]3 years ago
7 0

Answer:

Parapatric speciation  

Explanation:

There are different types of speciation. Parapatric speciation consists of new species evolving from a continuous distribution. That is, there is no physical barrier that might impede the gene flow,  in fact, it might continue during the speciation process.  

There is an environmental gradient that determines different phenotypes for different environmental conditions. One phenotype is more adapted to one of the distribution extremes than the other phenotype. In the exposed case, the environmental gradient is given by the differences in pH.

In the border between the environmental extremes, there is the primary hybrid zone, where both phenotypic forms might meet and hybridize.

   

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Approximately how far, in cm, does the blood move during one beat? Express your answer to two significant figures and include th
Marysya12 [62]

Answer:

7.5cm

Explanation:

Velocity vs Time Graph:

When the object is going along the plane with velocity v at a particular time interval t we can explain it's motion via the velocity vs time graph. If the velocity of the object is constant then velocity vs time graph will produce a horizontal straight line. If the amount of differentiation of velocity of the object is positive and constant then the graph shows the linear line whose slope is is the same as the ratio of the change in velocity to the time interval.

Velocity vs time graph:

Is shown in the attached image

A velocity-time graph helps us to estimate the distance traveled by using the area under the graph.

Height of the triangle is the velocity (v) = 0.75m/s

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Distance travelled

= 1/2(V) * t

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