The environment has changed, whether it changes the environment in physical, chemical, or biological in soil or air will also result in harmful organisms or property, this change will have the effect, directly or indirectly.
An environment that is changing, whether it's climate change. Physical, chemical or biological, soil or air, which will also result in danger to life or property, this change will affect, directly or indirectly.
The environment has changed, whether a change of environment on physical, chemical or biological in the soil or air, which can also cause danger to life or property, this change will take effect, directly or indirectly.