Tài nguyên được gắn thẻ với: Trees
89 đề mục được tìm thấy (Hiển thị 81 - 89) Trước
- Abstract, Plant roots can grow anywhere-in the soil, on the surface of the soil, in the water, and even in the air. Except for the first formed roots that respond positively to gravity, most roots do not grow toward anything or in any particular direction. Root growth is essentially opportunistic...
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