What is obstacle of the story ants in my bed?

What from the columbian exchange had perhaps the biggest impact on the world?

What happened 10 million years ago? if u answer, u get 50 ! plz answer ; -;

How are the perspectives presented in the excerpts similar? they show the disappointment and fear mission control workers feel when the lunar module develops problems. they show the huge investment of time and energy mission control workers dedicated to the lunar module. they show how mission control workers view the lunar module as if it is the workers' very own child. they show the relief and excitement mission control workers feel when the lunar module lands on the moon.