Question

select the correct answer from each drop - down menu.green lizards were observed in the region in the image. changes in the geography of the region caused the formation of a stream, whichdivided the region into two halves. the left half developed a dark green environment, and the right half a comparatively lighter greenenvironment. as a result, two geographically isolated populations, dark and light green lizards inhabited either side of the stream.the region on the right has more light green lizards as a result of natural selection. the new species will develop by way of sympatric speciation allopatric speciation convergent evolution

Explanation:

Allopatric speciation occurs when a population is divided by a physical barrier (like the stream in the image), leading to geographical isolation. Each isolated population (dark - green on the left and light - green on the right) evolves separately due to different environmental pressures (natural selection acts on them in their respective habitats). Sympatric speciation would occur without a physical barrier within the same geographical area. Convergent evolution is when different species evolve similar traits independently, which is not the case here as we are talking about speciation (formation of new species) from a single ancestral population divided by a barrier.

Answer:

allopatric speciation