These "native" species can have serious effects on their environment.
"They're making an impression on their environment as much as they are making an object.
It's common to blame disadvantaged children's poor academic performance on their "environment".
"I really believe everybody will be productive, be a little productive, not be productive, based on their environment," Colletti said.
The makeup and behaviour of fictional characters often depend on their environment quite as much as on their personal characteristics.
What we are seeing here is yet another of the large-scale, potentially tragic, uncontrolled experiments that humans have conducted on their environment without intending to.
"They take out problems on themselves, as it were, where men have externalising problems, where they take things out on their environment, such as alcohol and anger problems".
Species that are geographically limited in this way are "more likely to go extinct through localized impacts on their environment," he said.
Developing countries can benefit, the negotiators said, from their common ground in balancing the pressures on their environment with the pressure to reduce poverty.
Leeches are ectotherms — cold-blooded animals that cannot regulate their own temperature and depend on their environment to do it for them.
The Kalash rely heavily on their environment but it was being shipped out from underneath them, particularly the huge cedar trees which keep the rocky slopes of the Hindu Kush from washing into the Chitral river.
