Which statements are advantages of multicellular organisms? Select all that apply.

They have specialized levels of organization, such as tissues, that carry out specific functions.
Their individual cells can function on their own if separated from the organism.
Their cells can coordinate their activities to perform complex activities.
Their cells can come together to form larger structures.

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity

Select the correct answer from each drop-down menu proteins are

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.