Bradley is watching his twin daughters play on a playground seesaw, and is fascinated by the way only one side can be up or down at a time. He thinks about color vision, and recognizes that this is similar to how the opponent process theory describes his ability to see just one color of a color-pair at a time.
Los europeos llevaban a un enemigo oculto a los indios: nuevas enfermedades. Los pueblos nativos de América no tenían inmunidad contra las enfermedades que los exploradores y colonos europeos traían consigo. Enfermedades como la viruela, la influenza, el sarampión e incluso la varicela resultaron mortales para los indios americanos.
The answer is "this research would not require IRB review because it would be eligible for exemption since the researcher is not interacting with the children and the playground is a public setting".
IBR is a kind of board that applies research morals by looking into the techniques proposed for research to guarantee that they are moral and ethical and do not cross any limits proposed.
Answer:
The lengths of droughts have increased
Explanation: