Almost all the south american and central american indians have rh-positive, type o blood. note that there is no significant biological advantage to this blood type. which mechanism best explains these facts

Why do oceanic plates tend to subduction when colliding with a continental plate

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

Which statement describes how favorable traits in a population relate to natural selection? they are the only traits that ever exist in the population. they build in the population over time. they are rarely passed on to offspring. they are found only in a few individuals within the population.