If a DNA molecule has 23% Cytosine (C), what percent of the molecule must there be of Adenosine (A)? *

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural. question 2 reflects a moral or social value. question 3 refers to something that can be measured. question 4 reflects a question that can’t be observed.

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