After the end of a normal inspiration, the volume of air in the lungs is about 2.8 l. normally quiet inspiration is driven by a pressure difference of about 2 mm hg. the air in the lungs is at 37 ° c and after normal expiration it is at atmospheric pressure. quiet inspiration is driven by the expansion of the chest cavity by contraction of the diaphragm, which expands the air in the lungs. how much is the air feher, joseph j. quantitative human physiology: an introduction (academic press series in biomedical engineering) (kindle locations 3177-3180). elsevier science. kindle edition.

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 is the following best defines climate?

Methane gas created by a cows flatulence especially in a large herd is a greenhouse gas. true or false.