12. Nuclei of atoms are made up of:A) Protons.B) Protons, usually with neutrons added.C) Protons, usually with electrons added.D) Neutrons, usually with electrons added.E) Neutrons.Feedback: The simplest nucleus is the single proton in “ordinary” hydrogen. All other nuclei include protons and neutrons. Electrons make the cloud around the nucleus.Points Earned: 1.0/1.0 Correct Answer(s):B13. One of the big problems faced by National Parks is that:achieving both of these is not easy.lots of baby moose that can be sold on the export market to raise money to pay the rangers.chipmunks off caffeine isn’t easy.but people want to enjoy them now.
like to save for future generations.Points Earned: 1.0/1.0 Correct Answer(s):A14. A nighttime picture of Earth shows human-controlled lights spread across most of the land surface, and a few out in the ocean on ships. In round numbers, humans (and the things we grow, or the pets we live with):Points Earned: 1.0/1.0 Correct Answer(s):D15. The jobs of geologists include:
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