The last question! this is extremely hard!

Acid rain is the direct result of acid released by burning fossil fuels. select the best answer from the choices provided ot o f true or false

The transport tubes for food coming down the plants are called?

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