unnecessary traits might not always lead to extra cost, and even then, the extra cost might not always lead to extinction.
the extinction usually happens when a trait that represents a disadvantage in a sufficiently heavy competition for survival. If the competition is low enough, the trait may survive.
You may believe what you want or even reject evolution apparently, but you have now finally arrived at your statement and we can just agree to disagree as I will not forcefully teach people that doesn’t want
unnecessary traits might not always lead to extra cost, and even then, the extra cost might not always lead to extinction.
the extinction usually happens when a trait that represents a disadvantage in a sufficiently heavy competition for survival. If the competition is low enough, the trait may survive.
You may believe what you want or even reject evolution apparently, but you have now finally arrived at your statement and we can just agree to disagree as I will not forcefully teach people that doesn’t want