Could a person/any kind of living thing have atleast 2 hearts producing different color blood? If they could would the blood be mixed (blue and red blood are produced but come out purple either more on the blue side or more on the red side depending what spot has more blood of a specific color)

Ahypothesis that has been tested again and again , with similar results each time may become a law , true or false

During a hot day, warm and moist air rises and cools in the atmosphere. which even would occur next on such a day? a. condensed droplets would gather to become water vapor. b. water vapor would condense into tiny droplets. c. water droplets would evaporate to form rain and snow.

In an experiment examining the effects tai chi on arthritis pain, callahan (2010) selected a large sample of individuals with doctor-diagnosed arthritis. half of the participants immediately began a tai chi course and the other half (the control group) waited 8 weeks before beginning. at the end of 8 weeks, the individuals who had experienced tai chi had less arthritis pain that those who had not participated in the course.