The tragedy of the commons refers to the overuse of resources

Ineed more info for this, i don’t quite understand what you’re asking.

That is true tge cactus as a structural adaptation to its envirinment has it leaves reduced to spines. but this doesnt mean it cant produce food it produces food because of the presence of chlorophyll in its stem

D.) domain, kingdom, phylum, class, order, family, genus then species

Allow large amino acids through