Argon and calcium both have an atomic mass that rounds to 40, but they have different atomic numbers. what are the differences between the two atoms, based on the information given? argon has more neutrons, but calcium has more protons. argon and calcium have a different number of protons, but the same number of electrons when neutrally charged. argon and calcium have the same number of neutrons, but they have a different number of protons. argon has more proton, but calcium has more neutrons. argon and calcium have the same number of protons, but they have a different number of neutrons.

Which type of neuroglia is found outside of the brain?

What were the main components of earth’s earliest atmosphere? oxygen and ammonia hydrogen and helium oxygen and nitrogen hydrogen and nitrogen

Archeologists have discovered three sites showing conclusive evidence for the mastery of fire in tanzania, from a period slightly after the time that homo habilis was present in africa. these sites clearly were founded by homo erectus, the descendent species of homo habilis that migrated north, out of africa and into asia. homo erectus was known to have mastered fire, from ample evidence at sites in asia. there is no reason to attribute mastery of fire to homo ergaster, the descendent species of homo habilis that remained in africa.which of the following is an assumption on which the argument depends? (a) before their migration, homo erectus occupied african territory as far south as tanzania.(b) the strain of migration provided the selective pressure motivating homo erectus‘ mastery of fire.(c) homo ergaster would not have derived as much benefit from the mastery of fire as did homo erectus.(d) homo ergaster inherited all cultural knowledge from homo habilis, a species that did not have mastery of fire.(e) homo ergaster did not occupy regions as far south as tanzania until well after the time of these three sites.