ok so i dont know much about this but but im going to try my best.
so i did a bit of research about what all those birds have in common like you asked for and so they birds really dont have that much in common, so i went on a PREZI and i did some more reasearch i took some pictures to maybe help you.
im not sure if this helped if i didnt do it correctly just lemme know and ill do more research
ok so i added more research to this, look at the pictures, it is the EXACT answer to your question, if you need more research lemme know fam
The mouse, every other animal is on it's own as soon as it hatches.
Chemical and gaseous exchange takes place only across capillary walls
Sorry for the late answer but I hope that's still help !
If we were to differentiate anthroprocentric and biocentric views of the environment you could say that anthroprocentric is more holistic than biocentric. They consider the importance of the environment to human beings. Biocentric sees humans as an individual part of the environment.
Also Biocentric views tend to focus more on biotic factors (living things) and anthroprocentric veer towards the abiotic factors (non-living things).
Answer:
<h3>tears or saliva and mucus </h3>
Explanation:
hope this helps