Which sentence is more formal? Rice is super important for billions of people around the world.
Rice is the staple food for billions of people around the world.

These factors threaten north americas ecosystems

Which country is the smallest island of the greater antilles

The declining axolotl population in mexico city is an example of in overcrowded cities. a. the surpassing of support capacity b. changes to natural environments and native species c. the lack of safe homes and tenured spaces d. the effects of a growing urban heat island