and directions of forces and motions must be described in terms of an arbitrarily chosen reference frame and arbitrarily chosen units of size.

What type of genetic drift would be simulated if all the beans that were not selected died out?

After reading the paragraph below, answer the questions that follow. researchers have created a robot that has a very thin leg that is moved by cardiac (heart) cells contracting in unison. the robot, made of a polymer similar to that used in making contact lenses, is bathed in heart cells with supporting cells, which then attach to the robot and provide movement as they contract. all of the cardiac cells working together can cause the robot leg to move in a way that individual cells could not. this is an example of a. emergent properties of cells. b. energy flow through an ecosystem. c. adaptation. d. internal environment regulation.

What substance acts to prevent sudden ph changes in bodily fluids?