How did elevated trains and subways improve urban transportation?

Como se presentan los personajes de cunshi y su pequeño hijo? describe a cada uno de ellos

Dry land planting can benefit the environment by reducing the need for tillagate

All of the following are reasons why deserts extremely susceptible to wind erosion except a. they lack major root systems b. they contain thin, dry soil c. they have very few plants and trees d. they are extremely hot and lack water