his far north there is only a narrow window of time for cranes to breed successfully, especially for those what fly even farther to breed, as some of those that fly even farther to breed, as some of those wintering in mexico do in siberia. If late in arriving, they waste their effort of migrating the thousands of kilometers north. if they are too early. snow and ice cover all food sources. In what way do these sentences help develop a central idea in the passage

Answer 1

These sentences help develop the central idea in the passage by highlighting the challenges and limitations faced by cranes in their breeding season in the far north. The sentences emphasize the narrow window of time available for successful breeding, the consequences of arriving late or too early, and the potential obstacles of snow and ice cover. Overall, this information underlines the importance of timing and conditions for the breeding success of cranes in northern regions.