From orbit we can study pollution and urbanization, the destruction of great rain forests, desertification, erosion, and resulting changes in the Earth's climate.
(we; can study; pollution and urbanization, the destruction of great rain forests, desertification, erosion, and resulting changes in the Earth's climate)
we
can study
pollution and urbanization, the destruction of great rain forests, desertification, erosion, and resulting changes in the Earth's climate