Design an experiment to test the effects of a new dog food on the thickness and water shedding properties of the coats golden retriever puppies. Include all the parts of a scientific experiment and design objective methods to asses coat thickness and water shedding ability.

The picture below shows two galaxies. spiral galaxy and elliptical galaxy which of these statements best describes a similarity between the two galaxies? (2 points) both have elongated centers. both have centers shaped like bars. both change their shape from time to time. both are held together by gravitational forces.