Leonardo is explaining the ecological pyramids to his daughter. he tells her that often scientists do not favor pyramid of biomass. why would he
say that

Identify the missing parts of the carbon cycle

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.

Across of blue x blue (both heterozygous) would result in