Members of the ancestral salamander species live in northern California. As they migrate southward, populations are separated by the Central Valley. With limited contact between populations on the east and west of the valley, genetic differences accumulate. What type of speciation occurs under these conditions?

Allopatric speciation

Explanation:

Allopatric speciation is one of the five types of speciation (allopatric, peripatric, parapatric, sympatric and artificial) it happens when a population is geographically separated; for example, when there’s an isthmus splitting an ocean or fruit flies being seperated in the lab. Then the species on each sides of the barrier can no longer mate with each other, and each population evolves separately.

1.) question:

how was the agricultural revolution related to the industrial revolution?

d.) improved agriculture led to population growth, which increased demand for goods.

2.) question:

which of the following happened first in the events leading to american independence?

c.) the meeting of the first continental congress.

3.) question:

what was one advantage that cities offered businesses and industrialists?

answer:

d.) transportation networks

4.) question:

what economic philosophy developed in response to the problems of industrial workers?

a.) socialism

5.) question:

how does this image relate to the jacobins?

b.) the jacobins used this machine to scare and execute those who supported the king.

hope this !

answereruption of molten material; magnetic stripes in the rock of the ocean floor; the age of the rocks themselves;