Brainliesttt ! describe some of herbert spencer's publications and how it impacted the developing theory of evolution.

Which sequence correctly shows the path of carbon dioxide during repiration?

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes