Heavy rains and mudslides cause a river to change course, isolating two groups of lizards from one another. if they remain isolated for a long period of time, a. both groups will probably become native species one or b. both groups will probably become invasive species one or c. both groups will probably emigrate one group will probably become an endemic species d. the groups will probably diverge genetically, and speciation may occur

d. the groups will probably diverge genetically, and speciation may occur

Explanation:

The geographical isolation of two populations of a species for a longer time period leads to allopatric speciation. During the process, the isolated populations accumulate genetic variations to become adapted to the prevailing conditions of the habitat.

Accumulation of genetic variations leads to reproductive isolation between the population. After several generations, the individuals of the two isolated populations are unable to interbreed due to genetic variations. Now, these two populations are said to belong to two different species. The isolated lizard populations would also accumulate genetic variations resulting in allopatric speciation.

thermophiles, notice the prefix thermo.