Answer:
1) True
2) False
3) True
4) True
5) True?
6) False?
7) True but no strictly the opposite sex
8) True (some people are pansexual, poly or simply have a consensual open relationship)
Explanation:
I'm assuming that you're talking about all of this in the US so that's what I'm basing my answers around when it's applicable but it's difficult because a lot of these seem to be just opinion and answers could be changed based off of personal belief considering that the majority of the questions are not strictly fact based like #2 is, but I hope that this helps :)
Depend on what you mean by what kind of competition, if you talk about competition for food, some bird population may be getting smaller and have a hard time to reproduce because they can't get enough food for themselves.
