Quote Originally Posted by GoktimusPrime View Post
08:08 in this video explains how having haemocyanin based blue blood would beneficial to the Kree. Although something this video doesn't comment about is that while blue blooded creatures function better in low oxygen and low temperature environments, they also perform worse in oxygen-rich environments. This is why IRL blue-blooded creatures inhabit oxygen-poor cold environments (and are all invertebrates), whereas creatures who live in oxygen-rich environments like the surface of the Earth, have red blood. So... not sure how Kree, Vulcans, Romulans etc. would biologically operate as well in the same environments as humans. IRL blue blooded and red blooded animals generally don't share the same habitats. Our blood types specifically suit our respective environments.

Please correct me if I'm wrong about this.
I’m curious as to why, with ALL the suspension of disbelief that has been required to sit through every single MCU movie, you seem to be hung up on this?