Which of the following is a way that nitrogen atoms move from a nonliving part of the environment into a living part of the environment?

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

Injuries in the environment are a result of

Strands of genetic material floating in the nucleus are referred to as