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hmchau2009
2 năm trước
cho tam giác abc vuông tại a,đường cao ah.biết ab=10 cm,ah= 6cm.tính độ dài các cạnh ac,bc của tam giác abc giúp mk vs mk vote 5 sao cho
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Câu 5. Ngành ĐVCX. 1. Lớp cá a. Trình bày đặc điểm cấu tạo ngoài của cá chép thích nghi với đời sống bơi lội trong nước? b. Tại sao cá bị mù vẫn tránh được chướng ngại vật trên đường đi? c. Tại sao khi đưa cá lên cạn một thời gian cá bị chết? d. Nhớ thí nghiệm vai trò các loại vây cá. ( ko cần thí nghiệm ) c. Tại sao số lượng trứng mỗi lứa đẻ của cá lại lớn? 2. Lớp lưỡng cư. a. Trình bày đặc điểm cấu tạo ngoài của ếch đồng thích nghi với đời sống vừa ở nước vừa ở cạn? b. Tại sao khi cho ếch đồng lên chỗ khô ráo một thời gian thì ếch sẽ bị chết? c. Số lượng trứng mỗi lứa đẻ của ếch so với cá như thế nào, giải thích? Trả lời đúng, đầy đủ mik hứa vote 5 sao Đừng spam nhé

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