Who owned large estates in early china

Awatershed is a piece of land that drains water into a particular stream, lake, or river. which of the following factors often negatively impacts the water quality in a watershed? a.) wetlands b.) pollution c.) irrigation d.)rainfall

What is the difference between external & internal migration

Which is a possible result of higher air temperatures caused by global warming? a. increase in sea level b. freezing of polar ice caps c. rapid evaporation of water in the soil d. flooding of low-lying coastal areas