Geologist discovered fossils of identical spider mites from the same time period but on opposite sides of the ocean from each other. What conclusion is supported by the discovery of these fossils?.

Well, technically um like well 

Improved travle between colonies and africa

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.