Which of these veins returns blood to the superior vena cava: ?

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

What problem would a person most likely have if her kidney did not work correctly?

Which group of protists would be most likely to have cilia as adults and why? (1 point)the sporozoan protists would since they have to spread their spores around.the heterotrophic protists would since they use them to gather food.the parasitic protists would since they need to find other organisms to attack.the autotrophic protists would since they must move to find light.