Two allopatric sister species of frogs come into contact as the southern species expands its range northward because of a warming climate. The mating seasons of the two species overlap, their mating calls are very similar, and the two species readily interbreed in the zone of sympatry. However, all the hybrid tadpoles die before developing into adult frogs. What is the best prediction of what will happen in the two species where the populations overlap

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous