Which statement is true about a base when it reacts with another substance

You may expect bonds between two atoms which each have n covalent lonic metallic hydrogen

What causes most sediment to wash or fall into a river

Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.