Why do black holes exist and why do neutron stars exist? i can't seem to find anything online explaining why they might actually exist

Mount erebus, an active volcano, is located a. in australia's snowy mountains b. on new zealand's north island c. in antarctica d. on melanesia's largest island

Using complete sentences, outline two specific examples of how technology advances make the world seem smaller.explain what it means to say the world is “shrinking”

Where does oxidative phosphorylation take place