Answer: the answer is D
Explanation: because i said so
The three main worm phyla are flatworms, roundworms, and segmented worms. Roundworms have a digestive tube that has two openings. Segmented worms have a closed circulatory system in which blood is enclosed in blood vessels. These are important steps in the evolutionary development of animals.
ok this one is easy. the measurments are dividing by 2
2,1,.5,.25
so it would be
C: 0.2 meter.
Since they don't have teeth, crawfish have a gastric factory that aides in absorption in the stomach. The factory is like teeth however are in the stomach. Rats don't have the kind of processing in their stomach since they have teeth.
More precise .. what does the instructions tell the cell? Reword question