What are two structures in animals that serve the same purpose as lungs

To encourage railroad companies to build railroads across the west, the government gave them subsidies by select the best answer from the choices provided. a. paying the wages of laborers b. giving them building materials c. providing railroad trains d. providing free land

Which revision stands out as most effective for a multimedia presentation slide? sources were left out. the language is simplified. a lot of the information is left out. sentences were used instead of phrases.

Why does this website suck for taking all my ranks away for no reason : (