Aleech attaches itself to the gums of a crocodile and sucks the crocodile's blood. then, the crocodile opens its jaws so that an egyptian plover bird can kill and eat the leech. the relationship between the crocodile and the egyptian plover is an example of

Which of the following can occur to two segments of a population if they are geographically isolated 1.) they can only share some types of genes 2.)both groups most likely become extinct 3.)they find a way to come back together 4.)eventually they become separate species