Question

drag the missing word into place
grassland plant and animal species have developed special

to help them survive in their habitat.
blames
continents
adaptations

Explanation:

The sentence is about grassland species developing something to survive in their habitat. "Blames" means to assign fault, which doesn't fit. "Continents" are large landmasses, also not relevant. "Adaptations" are traits or characteristics that help organisms survive in their environment, so it's the correct word.

Answer:

adaptations