皮皮学，免费搜题
登录
搜题
【简答题】
According to the author the concept of “environment” is difficult to explain because ________. A) it doesn’t distinguish between the organism and the environment B) it involves both internal and external forces C) the organism and the environment influence each other D) the relationship between the organism and the environment is unclear
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
相关题目：