These four subsystems are called "spheres." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air). Each of these four spheres can be further divided into sub-spheres
The answer is steamboats! The first steamboat came year 1807 and was invented by John Fitch:)
Answer:
The answer to this question is. The Huang He river often floods and when that happens, it can be disastrous. The floods damage homes, livestock, and has even caused fatalities. Dams have also never been able to fully contain the river.
**Brainliest would be appreciated**
Explanation:
