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> 生态系统中的物质循环是[]A.反复出现B.单向流动C.逐级递减D.逐级增加-八年级生物
生态系统中的物质循环是[]A.反复出现B.单向流动C.逐级递减D.逐级增加-八年级生物
题目简介
生态系统中的物质循环是[]A.反复出现B.单向流动C.逐级递减D.逐级增加-八年级生物
题目详情
生态系统中的物质循环是
[ ]
A.反复出现
B.单向流动
C.逐级递减
D.逐级增加
题型:单选题
难度:偏易
来源:同步题
答案
A
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题目简介
生态系统中的物质循环是[]A.反复出现B.单向流动C.逐级递减D.逐级增加-八年级生物
题目详情
[ ]
B.单向流动
C.逐级递减
D.逐级增加
答案