Question

drag the missing word into place.
grasslands exist on every except antarctica, but they go by different names: prairies in north america, savannas in africa, pampas in south america, steppes in asia and europe, and rangelands in australia.
options: continent, biome, adaptation

Explanation:

The sentence is about grasslands existing on different landmasses except Antarctica. "Continent" refers to large landmasses (North America, Africa, etc.), "biome" is a large ecological area, and "adaptation" is about organisms adjusting. The context of listing landmasses (North America, Africa, etc.) shows "continent" fits as grasslands are on each continent (excluding Antarctica).

Answer:

continent