Environmentally in this context just means anything that’s not directly genetic or inherited epigenetic. It doesn’t mean plants and animals or anything like that.
IQ is mostly genetic (in rich egalitarian countries like the USA), but everyone seems to agree that there’s still some environmental factors that smart parents can do to make their children a tiny bit smarter. I don’t know exactly what those factors are though. Probably any kind of practice with thinking and studying would help a tiny bit, but perhaps other things to do with better care such as nutrition. But I know there’s not a lot that parents can do that helps with IQ long-term, especially when society as a whole is already trying to do everything they can to boost IQ environmentally already.
“Can you actually provide this evidence to us?”
I could, but it’s 7:57am here, and I need some sleep. And half the information you want is in Arabic, and the other half requires you to understand genetics. And I don’t think you actually care about the answer. But you could probably Google it yourself if you could suppress your biases and your snark.
Remember, you’re looking for these facts, but not necessarily with the exact wording: 1. They saw the USA as somewhere where people are allowed to do whatever they want far more than in other countries or at least than their country. 2. They strongly dislike that fact or think Americans should have to follow harsh laws about many aspects of their life. 3. They are genetically different from us. 4. Genetic differences are caused by mutations in general. 5. They have personality differences from us that seem to be heritable and lead to a desire for external rules and/or violence.
“Citation needed: I’ve never seen the people who hate America call it “a beacon of freedom”. They tend to call it stuff like “imperialist aggressor” instead. And likewise “imperialist aggressor” is rarely used as a descriptor of America by people who love it.
Firstly, people like Michael Moore call America an imperialist aggressor all the time (because it is), but still love America. “Imperialist Aggressor” is our term. Muslim terrorists don’t talk like that as much as we do, because they are also trying to establish an Islamic empire through violent aggression.
Obviously, they are going to use synonyms for “beacon of freedom” rather than saying it word for word. And they would say it in Arabic rather than English, so you’d have no idea what they were saying. They would use an exact synonym like “cesspool of depraved anarchy that’s sucking other countries in to their depravity” which means the same thing. What they would never say that the USA is a tyrannical totalitarian dictatorship.
The people you are thinking of, like “we need more gun control” or “gay people shouldn’t be able to marry” are a bit hostile to freedom, but still very different from Muslim fanatics who think we need to all pray 5 times a day, cover ourselves from head to toe, never criticise our leaders, and a thousand other laws.