Human activities are threatening animals and plants.

人类活动正在威胁动物和植物。

Human activities are altering the ocean food chain.

人类活动正在改变海洋食物链。

Many animals have become extinct due to human activities.

许多动物由于人类活动而灭绝。

The extinctions of many species are caused by human activities.

许多物种的灭绝是由人类活动引起的。

Scientists ascribe the recent climate changes to human activities.

科学家们归因于最近的气候变化是因为人类活动。

Environmental indicators help track the impact of human activities.

环境指标有助于跟踪人类活动的影响。

The scientist is attributing the climate change to human activities.

科学家将气候变化归因于人类活动。

Historical geography studies past geographical environments and human activities.

历史地理研究过去的地理环境和人类活动。

The habitat of the tuatara is being threatened by human activities.

楔齿蜥的栖息地正受到人类活动的威胁。

Ecology helps us understand the impact of human activities on the environment.

生态学帮助我们理解人类活动对环境的影响。