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+ Các biện pháp bảo vệ tài nguyên sinh vật:
- Bảo vệ các khu rừng già, rừng đầu nguồn.
- Xây dựng các khu bảo tồn, rừng quốc gia.
- Cấm săn bắn và khai thác bừa bãi các loài sinh vật.
- Trồng cây, gây rừng.
- Ứng dụng công nghệ sinh học để bảo tồn nguồn gen quý hiếm.

26 tháng 4 2021

+ Các biện pháp bảo vệ tài nguyên sinh vật:

- Bảo vệ các khu rừng già, rừng đầu nguồn.
- Xây dựng các khu bảo tồn, rừng quốc gia.
- Cấm săn bắn và khai thác bừa bãi các loài sinh vật.
- Trồng cây, gây rừng.
- Ứng dụng công nghệ sinh học để bảo tồn nguồn gen quý hiếm.

26 tháng 4 2021

 Khu vực đồi núi
– Khu vực đồi núi chia thành 4 vùng:
a) Vùng núi Đông Bắc
– Là một vùng đồi núi thấp nằm ở tả ngạn sông Hồng.
– Có những cánh cung lớn và trung du phát triển rộng.
– Địa hình Caxtơ khá phổ biến.
b) Vùng núi Tây Bắc
– Là những dải núi cao, những sơn nguyên đá vôi hiểm trở nằm song song, kéo dài theo hướng Tây Bắc-Đông Nam.
– Khu vực còn có những đồng bằng nhỏ trù phú nằm ở giữa vùng núi cao như: Mường Thanh, Nghĩa Lộ.
c) Vùng Trường Sơn Bắc
– Dài khoảng 600km.
– Là vùng núi thấp, 2 sườn không đối xứng.
– Sườn Đông hẹp và dốc, có nhiều núi nằm ngang chia cắt đồng bằng
d) Vùng Trường Sơn Nam
– Là vùng đồi núi và cao nguyên hùng vĩ.
– Đất đỏ badan dày, xếp thành từng tầng trên các độ cao 400m, 800m, 1000m
e) Ngoài ra còn có địa hình bán bình nguyên Đông Nam Bộ và vùng đồi trung du Bắc Bộ.

26 tháng 4 2021

- Địa hình đồi núi chiếm 3/4 diện tích lãnh thổ nước ta.

- Hệ thống núi: Hệ thống núi chạy dọc bên bờ Biển Đông, kéo dài trên 1 400 km từ biên giới Việt - Trung đến Đông Nam Bộ. Các dãy núi lan ra sát biển thu hẹp diện tích đồng bằng.

- Hướng dãy núi: Các dãy núi nước ta có hai hướng chính : hướng tây bắc - đông nam và hướng vòng cung.

- Phân bậc rõ rệt: Hệ thống núi ở nước ta có sự phân bậc rõ ràng, trong đó đồi núi thấp chiếm ưu thế với 60% diện tích cả nước, núi cao trên 2 000 m chỉ chiếm khoảng 1%. Những vùng núi cao địa hình rất hiểm trở, lắm đèo dốc như vùng Tây Bắc, Tây Nguyên,...

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20 tháng 5 2021

Vì trước mùa mưa thì các nơi sẽ không có mưa nên lưu lượng sông phải dâng lên từ từ mới dẫn đến lũ

-> Miền Bắc chia làm 4 mùa, mùa đông mưa ít nên cần 1 tháng để nước dâng tạo thành lũ

-> Miền Nam chia thành 2 mùa nên mùa khô kéo dài, không có mưa gây thiếu nước nên phải có thời gian dài hơn là 2 tháng để nước dâng lên thành lũ

9 tháng 4 2021

khó quá

10 tháng 4 2021

- Bạn nên vẽ biểu đồ hình tròn nhé!

Tuỳ bạn. Mình đi đội tuyển Địa lí của trường có tất cả 9 loại biểu đồ:

Thẳng, cột, thanh

Chồng, đường, tròn

Miền, kết, mạng

Bạn tìm hiểu từng loại và thấy cái nào hợp lí nhất thì vẽ. Mỗi loại có một chức năng riêng

30 tháng 3 2021

- Thuận lợi:

  • Biển nước ta rất giàu hải sản, có nhiều vũng, vịnh, tạo điều kiện cho nước ta phát triển ngành đánh bắt và nuôi trồng hải sản, phát triển giao thông vận tải trên biển.
  • Cảnh quan ven bờ tạo điều kiện phát triển du lịch.
  • Các khoáng sản như dầu khí, titan, cát trắng cung cấp nguyên liệu và vật liệu.
  • Biển còn tạo điều kiện cho phát triển nghề muối.

- Khó khăn:

  • Biển nước ta rất lắm bão, gây khó khăn, nguy hiểm cho giao thông, cho hoạt động sản xuất và đời sống nhân dân ở vùng ven biển.
  • Thuỷ triều phức tạp (chỗ nhật triều, chỗ bán nhật triều) gây khó khăn cho giao thông.
  • Đôi khi biển còn gây sóng lớn hoặc nước dâng ảnh hưởng tới đời sống nhân dân ven biển.
  • Tình trạng sụt lở bờ biển và tình trạng cát bay, cát lấn ở Duyên hải miền Trung.
30 tháng 3 2021

cop mạng ạ :))

Bài làm:

- Thuận lợi:

  • Biển nước ta rất giàu hải sản, có nhiều vũng, vịnh, tạo điều kiện cho nước ta phát triển ngành đánh bắt và nuôi trồng hải sản, phát triển giao thông vận tải trên biển.
  • Cảnh quan ven bờ tạo điều kiện phát triển du lịch.
  • Các khoáng sản như dầu khí, titan, cát trắng cung cấp nguyên liệu và vật liệu.
  • Biển còn tạo điều kiện cho phát triển nghề muối.

- Khó khăn:

  • Biển nước ta rất lắm bão, gây khó khăn, nguy hiểm cho giao thông, cho hoạt động sản xuất và đời sống nhân dân ở vùng ven biển.
  • Thuỷ triều phức tạp (chỗ nhật triều, chỗ bán nhật triều) gây khó khăn cho giao thông.
  • Đôi khi biển còn gây sóng lớn hoặc nước dâng ảnh hưởng tới đời sống nhân dân ven biển.
  • Tình trạng sụt lở bờ biển và tình trạng cát bay, cát lấn ở Duyên hải miền Trun