According to the tree which primates share the most recent common with humans?

 bonobos and chimpanzees

A phylogenetic tree is a diagram which depicts the lines of evolutionary descent of different species, organisms or genes from a common ancestor. The more closer a particular species or organism to the common ancestor depicts more common characteristics in common and hence, shows similarities with ancestor. Here, bonobos and chimpanzees are more closer to humans in a phylogenetic tree, hence, these primates share the most recent common ancestor with human.

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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.

maybe because its impossible for balloons to lift a whole entire house.