Soil: What It Is and What It Does
Explains that different kinds of soil are mixtures of sand, clay, and humus; tells how the weathering of rocks helps make soil; includes simple experiments to show the kind of soil in which different plants grow well.
Từ khóa:
Soil: What It Is and What It Does 1966
soil science
soil
Coronet Instructional Films
Soil: What It Is and What It Does Phim
Soil: What It Is and What It Does Phim Mới
Soil: What It Is and What It Does PhimMoiChill
Soil: What It Is and What It Does Xem Phim Online
Soil: What It Is and What It Does him HD VietSub
Bình luận
Chúng tôi sẽ không bao giờ chia sẻ email của bạn với bất kỳ ai khác.
Đề xuất xem
