Pulmonary vein
Aorta
Pulmonary artery
Vena cava
1.Fossils
2.Location
Scientist use fossils to study body structures and compare them.
Scientist use location to study location to see how organisms used their features to cross water or survive in different temperatures.
It should be an igneous rock because it formed by the volcanoes lava cooling down
I think it’s true i think and D
