What types of substances dissolve easily in water?

The image shows ekgs of a person with normal heart waves and of a person having tachycardia. based on this image, what kind of condition is tachycardia? a. the heart beats abnormally fast. b. the heart beats abnormally slow. c. the right atrium of the heart stops working. d. the left ventricle pumps less blood to the aorta.

In the respiration-photosynthesis cycle shown above, what are the products of cellular respiration that belong in box 2?

This is a scaffolding of protein fibers that us sell keep it shape in a cell division and cell movement