How is the level of oxytocin controlled by a positive-feedback mechanism?
a. the oxytocin in blood stimulates the pituitary to maintain the same level of oxytocin.
b. the oxytocin in blood stimulates the pituitary to secrete more oxytocin.
c. the oxytocin in blood stimulates the pituitary to secrete less oxytocin

Illustrate, label, and explain how atmospheric carbon and oxygen find there way into a consumer and then back into a producer. include the following terms in your illustration: co2, 02, respiration, photosynthesis, sugar, mitochondria, chloroplast, water, solar radiation

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.

What is the key to the recognition of codominance?