Are a proposed solution to enhance species survival by effectively creating a large preserve from several smaller ones.

The corridors are a proposed solution to enhance the species survival by effectively creating a large preserve from several smaller ones. The different patches of the forest lands are separated by the human activities, turning them into agricultural land, highways, or housing communities. This affects the migrating behaviors of the animals living in these forests patches. By connecting these separated patches by building corridors will solve this problem, and help conserve the species.

Hence, the answer is 'corridor'.

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus