How many known elements have atoms, in their ground-state, with valence electrons whose quantum numbers are n = 5 and l = 1?.

Which of these terms are associated with communication between neurons? chemical signals, electrical signals, synapse chemical signals, synapse, neurotransmitters synapse, electrical signals, chemical signals synapse, electrical signals, neurotransmitters

Scientists observed a rock stratum with fossil. if mollusks evolved before arthropod, where will their fossils be found.

Students taking a clep exam can earn between college credits, depending on the college's policies.