ELI5: Explain Like I'm 5

Unified neutral theory of biodiversity

Okay kiddo, have you ever heard of a biodiversity? It's about all the different types of living things, like plants and animals, that exist in a certain area. Scientists are really curious about why there are so many different types of living things in one place, and they’ve come up with something called the Unified Neutral Theory of Biodiversity to try to answer this question.

Let your little brain work. You might think that the reason there are so many different living things in one place is because some of them are better than others. For example, some plants might be taller and have more leaves, which can help them get more sunlight and grow faster. But according to the Unified Neutral Theory of Biodiversity, this is not the case.

Instead, this theory suggests that all living things are pretty much equal. They all have an equal chance of surviving and reproducing, no matter how different they might seem. This is called the "neutral" part of the theory.

So, according to the Unified Neutral Theory of Biodiversity, why are there so many different living things in one place? Well, it all comes down to chance. Sometimes, a certain type of living thing might get lucky and be able to survive and reproduce more than others. This can lead to a bunch of that one type of living thing in one place. Other times, another type of living thing might get lucky instead, leading to more of that type.

It's a bit like rolling a dice or spinning a wheel. Sometimes the number or color you want comes up more often than others, even though each possible option had an equal chance of being chosen. The Unified Neutral Theory of Biodiversity suggests that the same thing happens in nature – living things are all equally likely to survive and reproduce, but sometimes a certain type gets luckier than others.

Is that too complicated, kiddo? Basically, the theory is saying that living things are all pretty much equal and their differences aren't as important as chance in determining why there are so many different types of living things in one place.