pregunta una persona normal se puede meter una silla al ano ? según yo el ano se puede estirar hasta 10 cm así que se puede meter un mapache en mi ano así que si se puede meter un mapache pues una silla también , no ?

Number and variety of living organisms includes genetic, species, and ecological types

When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity

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.