I kinda remember it and I think it's 60%
I believe it is behavioural isolation. When there are changes within a certain species, e.g. new birdcalls are formed in certain individuals in a species, "traditional" birds may not like such mating calls and only choose to mate with the more common birdcalls from majority of the birds. There are also some birds that may like the new birdcalls, and choose to mate with birds with those birdcalls. They become genetically isolated as they continue such behavior. Eventually, through genetic drift and other mutations, different species form from a single specie.
Hope this helps! :)
A vertebrate is an animal with a backbone.
Answer:
extended period of 3mos. or more
Explanation:
chronic diseases such as diabetes, means u will have this disease 4 the rest of your life. whereas, acute, means temporary, corrected by antibiotic meds.
Poof just like that
everyone
gone
forever
lol
but in all seriousness, human life would cease to exist.
