Darwin's plans to find out about simulated choice by examining pigeons is that he needed to learn whether you can change the entire species taking after that particular pigeon into another type of pigeons. I hope the answer will help you.
Mullerian mimicry. Unpalatable means not tasty. If an animal (fly) is copying a toxic or unpalatable animal, it must be for survival. If predators know that one animal is unpalatable, the predator would not eat a fly that looks similar to that unpalatable animal.
Tight junctions hold the cells together as a rivet would in hardware so it can't be taken apart. This makes it so skin and intestines are very strong and don't break very often
