That’s not a biochemist, memorizing the amino acids is literally biochem 1 on college. Most people with a biology undergrad take that.
Being a biochemist is more about understanding the whole system of how proteins interact, and not really about memorization of any specific protein.
Water is the biggest limiting factor, trees need more water.
If they’re in a group with other humans. If you grow up without language like child raised by wolves then you just miss out on language completely and it’s very hard to impossible to learn later once your special infant brain language tool is gone.
The sad part is that there isn’t any real answer, like a lot of fundamental things in science we don’t really know how it works and won’t for decades. My personal theory is more along the lines of the whole tearing muscles concept is crap and exercise is basically just a signal for your body to make more muscle and doesn’t directly cause anything.