Plant and animal cells differ in a variety of ways. plants have a special structure that them produce their own food. within this specialized structure, the plant is working hard to convert the energy from the sun into its own sugars. what is the name of this plant structure?

Types of scientific inquiry that biologist engage in that cannot be completely controlled

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.

Identify two examples of chemical reactions that you have encountered during the last week. identify an exothermic and endothermic reaction. explain.