What is the major difference between ectotherms and endotherms

a whether or not the animal builds nests on land
b whether or not the animal has been found on several continents
c whether or not the animal maintains a constant body temperature
d whether or not the animal is classified as a vertebrae

Ture or false evidence for evolution includes millions of fossils

Physical characteristics of down syndrome

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.