Ionic bonds occur between . any two elements
two metals
a metal and a nonmetal
two nonmetals

Which technically is nasa developing that will astronauts reach mars

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm