Both Tyrannosaurus rex and an elephant are land animals of about the same mass.
T-Rex did both.
T-Rex did both.
Both Brontosaurus and Tyrannosaurus belonged to the order Saurischia. Saurischia is the order that includes all lizard hipped dinosaurs.
Spinosaurus, although both the Allosaurus and commonly known Tyrannosaurus Rex are close behind.
Radium is a solid, radon is a gas. Both are radioactive.
they both have really big heads................................................. execpt the chicken
Both Tyrannosaurus rex and Triceratops were dinosaurs. They were also very similar in regards to weight, and they were both very formidable to their enemies. Of course, they both had all the basic body parts for a dinosaur, the head, the torso, the four limbs, even though Tyrannosaurus had very small arms, and the tail.
they both glow.
Both isotopes and radioactive isotopes are pretty much the same but radioactive isotopes are better because it can be used to make medicine.
Nothing abnormal; radon is also a noble gas and radioactive.
similar because they both depend on spontaneous radioactive decay