The process of squeezing food through the digestive tube by contractions of the outer wall is:
a. digestion
b. enzyme action
c. peristalsis
d. hydrolysis

What two fields of study provide the core information that is used to classify organisms?

Imagine that certain laws of physics could be ignored and you were able to travel vast distances in moments. now imagine that you traveled to an earth-like planet located light-years away that is known to support life. think about what you’ve learned in this unit and make an argument for what you think would be the dominant type of life form on this planet. consider whether a notochord is required for an organism to manipulate its environment and become a dominant creature.

How do you date a sample of rock that you suspect as being one of the earliest on earth