Studies have shown that the formation of ______ explains the migration of animals between North America and South America and the possible cause of the extinction of most marsupial mammals on the South American continent.Multiple choice question.a land bridgea deep-water trencha meteor crateran inland sea

Prior to the formation of a land bridge about 3 MYA that allowed placental mammals to invade, marsupials were diverse and abundant on what other continent besides Australia?Multiple choice question.AsiaEuropeAfricaSouth America

Which of the following statements could challenge the evolutionary view of the historyof life on Earth?a) Coal deposits are found in Antarctica.b) The mitochondrial DNA of the medium ground finch in the Galápagos is identical to abird species in Europe.c) Both sugar gliders (Australia) and flying squirrels (North America) use flaps of skin tohelp them glide from one tree to another.d) Horse fossils occur in North America even though there were no wild horses in NorthAmerica in 1492

How do scientists believe that an asteroid impact in the Yucatán peninsula of Central America caused a worldwide mass extinction?Multiple Choiceby blocking the sun and inhibiting photosynthesisby using up all of the oxygen in the atmospheremost of the animals in the world were in the tropics of Central Americaby causing massive floodsby heating up the planet

Which of the following is an example of the process of evolution?Group of answer choicesThe large number and diversity of species of marsupials in Australia.The observed match between organisms and their environments.The existence of homologous traits such as the forelimbs of mammals.The changes in organisms over time observed in the fossil record.

Darwin's view of evolution proposes that new species arise from Blank______.Multiple choice question.species migrationexisting speciesinbreedingspecial creation