You identify five endemic species of mammals living on an island a short distance from the mainland. You also identify each species' closest relative on the mainland. Two alternatives exist to explain this group of species: Hypothesis

1. The ancestors of the current island species dispersed from the mainland to the island and subsequently diverged on the island (dispersal). Hypothesis
2. The island was originally part of the mainland but a rise in sea level resulted in its being cut off, with the result that the mammals on the island diverged from the ones on the mainland (vicariance).

humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of invasive species (such as new predators and food competitors), overhunting, and other influences. explosive, unsustainable human population growth is an essential cause of the extinction crisis.

explanation:

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.

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