There is already _____clear to show that plants and animals are being affected by climate change.
问题描述：
There is already _____clear to show that plants and animals are being affected by climate change.
答案有witness,certification,identity,evidence.正确答案是evidence.麻烦能够解释清楚一点吗?
答
Witness 是 见证人.
Certification 是 认证
Identity 是 身份
Evidence 是 证据
这句话是说,那我们已经有足够的证据来证明植物和动物.