In what way does glass act like a one-way valve for a conventional greenhouse? does the atmosphere play the same role? what would be the consequence of completely eliminating the greenhouse effect for the planet earth?

For the answer to the question above, I believe the answer will be that Glass transmits solar radiation into the greenhouse and blocks the infrared radiation from leaving the greenhouse. The same thing that will happen in the atmosphere. I hope this helps

I’m not really sure

The return of the wolf to yellowstone national park will probably affect the bird population to some degree, not significantly. while wolves will hunt birds when necessary, they prefer to hunt larger prey. the bird population will most likely only be affected when hunting is scarce for the wolves. birds of prey will also probably not be affected as much as other birds who spend more time on the ground hunting for food as the tend to spend more time in the air or in trees since they do not need to stay on the ground for long due to the nature of the way they hunt.