What is the primary distinction of being an animal? a. ability to reproduceb. having a backbonec. ability to digestd. ability to turn sunlight into energy

20 in the formula no3, what does the subscript 3 mean?

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.

If the birth rate of a population of dolphins is 2.0, the death rate is 0.5, and the population size is 100, what is this dolphin's population growth?