They haven't been. Read the history of the Environmental Protection Agency and the Sierra Club and you will see that the US has been extremely pro active about pollution.
Changing "we had done it" from active to passive voice would make look like "it had been done by us".
He teaches us english- change the voice
He teaches us english- change the voice
Let the child be brought back by us.
carbon dioxide
Fossils can tell us the climate and change in the future....
He told it to us. = active sentence.It was told to us by him. = passive sentence.
Before climate change became a significant issue, the US landscape and weather patterns were more stable and predictable. The impacts of human-induced climate change, such as rising temperatures, increasing severe weather events, and altered ecosystems, were not as pronounced as they are today.
Climate change is a global phenomenon affecting the Earth's climate system. It can be observed in various regions around the world through changes in temperature, precipitation patterns, sea levels, and more. The impact of climate change is felt on a local, regional, and global scale.
What is the passive sentence of performance delivered by the children enthralled us
Greenhouse gas is adding to global warming and climate change.
Our has no bearing over whether a sentence is active or passive. It can be used in both. Active voice: A nice couple bought our house. Passive voice: Our house has been bought by a nice couple.