Answer:
How did Mandarin become the official language? All of the official spoken languages were once dialects. Mandarin was one of the 10 major dialects in China and it officially became the national language for China in 1911 after Dr. Sun Yat Sen overthrew the Qing Dynasty.
Law of inertia i believe sorry if im wrong:)
Answer:
Soil salinity can be reversed, but it takes time and is expensive. Solutions include improving the efficiency of irrigation channels, capturing and treating salty drainage water, setting up desalting plants, and increasing the amount of water that gets into aquifers. Mulches to save water can also be applied to crops.
Explanation: Hope this helps
Answer:chứng minh lim qn=0 khi n tiến đến dương vô cùng nếu trị tuyệt đối của q<1Explanation
Manuel Acuña Roxas was the fifth President of the Philippines who served from 1946 until his death in 1948.
hope this helped<3
