Answer:
"U"-shaped, with peaks at the low and high extremes of beak size; disruptive selection
I think the answer would be pesticides... i see you selected it though. was that a wring answer?
The Tassie Devil has held this title for over 80 years. Prior to 1936, the largest carnivorous marsupial in the world was the thylacline, which is commonly know as the Tasmanian Tiger. The thylacline is a distant relative of the Tasmanian Devil and was over the twice it’s size!
A mother gives birth to around 20-40 Joeys at once. However, these joeys have to race to her pouch, which only has 4 teats. Talk about a hard start to life!
Although the yawn is more a display of fear and anxiety than aggression.
They relate because they show that during both natural selection and human evolution u could get a disease during both
