Which of the cardiovascular system’s circuits has deoxygenated blood in its arteries?
a. pulmonary circuit
b. innards circuit
c. antithesis circuit
d. systemic circuit
e. vanguard circuit

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons